Merge #30

30: Document current MSRV r=therealprof a=eldruin

This documents the MSRV used in CI, however, this crate builds with a much older Rust version.
Would there be interest in lowering it?

Co-authored-by: Diego Barrios Romero <[email protected]>

Author: bors[bot]

README.md

@@ -6,6 +6,11 @@ This project is developed and maintained by the [HAL team][team].
 
 ## [Documentation](https://docs.rs/nb)
 
+## Minimum Supported Rust Version (MSRV)
+
+This crate is guaranteed to compile on stable Rust 1.35 and up. It *might*
+compile with older versions but that may change in any new patch release.
+
 ## License
 
 Licensed under either of