Add 'free' to README

README.md

@@ -1,6 +1,8 @@
 jsh
 ===
 
+[![build status](https://ci.ianonavy.com/projects/1/status.png?ref=master)](https://ci.ianonavy.com/projects/1?ref=master)
+
 An augmented Unix userland. Makes your core utility functions a bit cooler by
 adding a --json flag that makes everything output in nice, serialized JSON.
 
@@ -9,6 +11,7 @@ adding a --json flag that makes everything output in nice, serialized JSON.
 * You have the following binaries (usually found in your distro's coreutils
   packages)
     * /usr/bin/ps
+    * /usr/bin/free
 * You have Go installed
 
 We're working on making it so that they don't have to be in those directories.
@@ -24,6 +27,12 @@ We're working on making it so that they don't have to be in those directories.
 * $ go install jsh/ps
 * $ $GOPATH/bin/ps
 
+
 You may want to prepend your path with $GOPATH/bin:
 
     export PATH=$GOPATH/bin:$PATH
+
+### free
+
+* $ go install jsh/free
+* $ $GOPATH/bin/free