Update README.md

Author: Jason Mobarak

README.md

@@ -18,7 +18,7 @@ To integrate with with Buildroot, see the examples in [piksi_buildroot](https://
 The Piksi Firmware toolchains are mirrored in the releases for this repo. When these are updated the instructions in the Piksi Firmware repository should be updated, along with any installation tools (i.e. Mac Homebrew formulas).
 
 # Adding a new toolchain
-For adding new toolchains to repo, create a Release and manually upload the toolchain as an asset. We're using GitHub releases mostly for "free" file hosting.
+For adding new toolchains to repo, create a Release and manually upload the toolchain as an asset. We're using GitHub releases as a stable file host for public toolchain assets.
 
 # Copyright