Update readme

README.md

@@ -7,18 +7,13 @@ This drivers aims to be a thin wrapper around the production-ready C driver, whi
 and ergonomic Rust interface that handles all the gnarly usage details of the C driver for you.
 
 Bson encoding and decoding is handled by the [bson crate](https://github.com/zonyitoo/bson-rs), the bindings
-are generated using [bindgen](https://github.com/crabtw/rust-bindgen).
+are based on generated bindings by [bindgen](https://github.com/crabtw/rust-bindgen).
 
-The API is experimental, it might change at any time.
+The API should still be considered experimental, but I'm not expecting changes at the moment.
 
 ## Compatibility
 
-The driver currently only builds on Unix, tested on Mac Os X and Linux so far. On Mac Os X you might need to
-set this environment var for building to work (see https://github.com/crabtw/rust-bindgen#building for details):
-
-```
-export DYLD_LIBRARY_PATH=/Library/Developer/CommandLineTools/usr/lib
-```
+The driver currently only builds on Unix, tested on Mac Os X and Linux so far.
 
 ## Logging
 
@@ -32,4 +27,4 @@ See the tests directory for examples of how to use the driver.
 
 ## Contributing
 
-Contributions are very welcome, only the parts of the C driver we need have been wrapped so far. Please write a test for any behavior you add.
+Contributions are very welcome, only the functionality we use has been wrapped so far. Please write a test for any behavior you add.