Tweak wording

README.md

@@ -14,8 +14,9 @@ It's ideal for use with [sonicpi.vim][sonicpi.vim].
 
 ## Installation
 
-# If you have the [Rust programming language][rust-install] installed
-Sonic Pi Tool can be installed like so:
+### From source
+
+If you have the [Rust programming language][rust-install] installed Sonic Pi Tool can be installed like so:
 
 ```sh
 cargo install --git https://github.com/lpil/sonic-pi-tool/
@@ -32,8 +33,9 @@ cargo install --git https://github.com/lpil/sonic-pi-tool/ --force
 `sonic-pi-tool` may not build on older versions of Rust. Please see [the CI
 configuration](././travis.yml) for which versions are explicitly supported.
 
-# If you have homebrew
-Sonic Pi Tool can be installed like so:
+### Homebrew
+
+Sonic Pi Tool can be installed like so using the Homebrew package manager for OSX:
 
 ```sh
 $ brew tap Cj-bc/sonic-pi-tool
@@ -45,7 +47,6 @@ $ brew install Cj-bc/sonic-pi-tool/sonic-pi-tool
 Homebrew formula is here: [Cj-bc/homebrew-sonic-pi-tool](https://github.com/Cj-bc/homebrew-sonic-pi-tool)
 
 
-
 ## Usage
 
 - [check](#check)