docs: run .md files through grammarly

CONTRIBUTING.md

@@ -1,4 +1,4 @@
-Hello! Thank you for choosing to help contribute to one of the SendGrid open source projects. There are many ways you can contribute and help is always welcome.  We simply ask that you follow the following contribution policies.
+Hello! Thank you for choosing to help contribute to one of the SendGrid open source projects. There are many ways you can contribute and help is always welcome.  We merely ask that you follow the following contribution policies.
 
 - [CLAs and CCLAs](#cla)
 - [Roadmap & Milestones](#roadmap)
@@ -12,14 +12,14 @@ Hello! Thank you for choosing to help contribute to one of the SendGrid open sou
 - [Code Reviews](#code-reviews)
 
 <a name="roadmap"></a>
-We use [Milestones](https://github.com/sendgrid/php-http-client/milestones) to help define current roadmaps, please feel free to grab an issue from the current milestone. Please indicate that you have begun work on it to avoid collisions. Once a PR is made, community review, comments, suggestions and additional PRs are welcomed and encouraged.
+We use [Milestones](https://github.com/sendgrid/php-http-client/milestones) to help define current roadmaps, please feel free to grab an issue from the current milestone. Please indicate that you have begun work on it to avoid collisions. Once a PR is made, community review, comments, suggestions, and additional PRs are welcomed and encouraged.
 
 <a name="cla"></a>
 ## CLAs and CCLAs
 
 Before you get started, SendGrid requires that a SendGrid Contributor License Agreement (CLA) be filled out by every contributor to a SendGrid open source project.
 
-Our goal with the CLA is to clarify the rights of our contributors and reduce other risks arising from inappropriate contributions.  The CLA also clarifies the rights SendGrid holds in each contribution and helps to avoid misunderstandings over what rights each contributor is required to grant to SendGrid when making a contribution.  In this way the CLA encourages broad participation by our open source community and helps us build strong open source projects, free from any individual contributor withholding or revoking rights to any contribution.
+Our goal with the CLA is to clarify the rights of our contributors and reduce other risks arising from inappropriate contributions.  The CLA also clarifies the rights SendGrid holds in each contribution and helps to avoid misunderstandings over what rights each contributor is required to grant to SendGrid when contributing.  In this way, the CLA encourages broad participation by our open source community and helps us build strong open source projects, free from any individual contributor withholding or revoking rights to any contribution.
 
 SendGrid does not merge a pull request made against a SendGrid open source project until that pull request is associated with a signed CLA. Copies of the CLA are available [here](https://gist.github.com/SendGridDX/98b42c0a5d500058357b80278fde3be8#file-sendgrid_cla).
 
@@ -34,25 +34,25 @@ If you'd like to make a feature request, please read this section.
 
 The GitHub issue tracker is the preferred channel for library feature requests, but please respect the following restrictions:
 
-- Please **search for existing issues** in order to ensure we don't have duplicate bugs/feature requests.
+- Please **search for existing issues** to ensure we don't have duplicate bugs/feature requests.
 - Please be respectful and considerate of others when commenting on issues
 
 <a name="submit-a-bug-report"></a>
 ## Submit a Bug Report
 
 Note: DO NOT include your credentials in ANY code examples, descriptions, or media you make public.
 
-A software bug is a demonstrable issue in the code base. In order for us to diagnose the issue and respond as quickly as possible, please add as much detail as possible into your bug report.
+A software bug is a demonstrable issue in the code base. For us to diagnose the issue and respond as quickly as possible, please add as much detail as possible into your bug report.
 
 Before you decide to create a new issue, please try the following:
 
 1. Check the Github issues tab if the identified issue has already been reported, if so, please add a +1 to the existing post.
-2. Update to the latest version of this code and check if issue has already been fixed
+2. Update to the latest version of this code and check if the issue has already been fixed
 3. Copy and fill in the Bug Report Template we have provided below
 
 ### Please use our Bug Report Template
 
-In order to make the process easier, we've included a [sample bug report template](https://github.com/sendgrid/php-http-client/ISSUE_TEMPLATE.md) (borrowed from [Ghost](https://github.com/TryGhost/Ghost/)). The template uses [GitHub flavored markdown](https://help.github.com/articles/github-flavored-markdown/) for formatting.
+To make the process easier, we've included a [sample bug report template](https://github.com/sendgrid/php-http-client/ISSUE_TEMPLATE.md) (borrowed from [Ghost](https://github.com/TryGhost/Ghost/)). The template uses [GitHub flavored markdown](https://help.github.com/articles/github-flavored-markdown/) for formatting.
 
 <a name="improvements-to-the-codebase"></a>
 ## Improvements to the Codebase

README.md

@@ -58,7 +58,7 @@ composer install
 
 ## Install without Composer
 
-You should create directory `lib` in directory of your application and clone to `lib` repositories [php-http-client](https://github.com/sendgrid/php-http-client.git) and [sendgrid-php](https://github.com/sendgrid/sendgrid-php.git):
+You should create a `lib` directory in the directory of your application and clone to `lib` repositories [php-http-client](https://github.com/sendgrid/php-http-client.git) and [sendgrid-php](https://github.com/sendgrid/sendgrid-php.git):
 
 ```
 $ cd /path/to/your/app
@@ -74,7 +74,7 @@ $ cd /path/to/your/app
 $ touch loader.php
 ```
 
-And add to `loader.php` code below:
+And add the code below to the `loader.php`:
 
 ```php
 <?php
@@ -83,7 +83,7 @@ require_once __DIR__ . '/lib/php-http-client/lib/Client.php';
 require_once __DIR__ . '/lib/php-http-client/lib/Response.php';
 ```
 
-After it you can use `php-http-client` library in your project:
+After it you can use the `php-http-client` library in your project:
 
 ```php
 <?php

TROUBLESHOOTING.md

@@ -7,7 +7,7 @@ If you can't find a solution below, please open an [issue](https://github.com/se
 <a name="request-body"></a>
 ## Viewing the Request Body
 
-When debugging or testing, it may be useful to examine the raw request body. In the `examples/example.php` file, after your API call use this code to echo out the statuscode, body and headers:
+When debugging or testing, it may be useful to examine the raw request body. In the `examples/example.php` file, after your API call, use this code to echo out the status code, body, and headers:
 
 ```php
 echo $response->statusCode();