Fixed more docs; we need $HOME not ~.

bundler-bin.sh

@@ -25,7 +25,7 @@
 # For example:
 #
 #  $ cp bundler-bin/bundler-bin.sh ~/.bundler-bin.sh
-#  $ echo "PROJECT_ROOT=~/code" >> ~/.bashrc
+#  $ echo "PROJECT_ROOT=$HOME/code" >> ~/.bashrc
 #  $ echo "[ -f ~/.bundler-bin.sh ] && source ~/.bundler-bin.sh" >> ~/.bashrc
 #
 # That's it... cd into a bundled project and try `echo $PATH` to see if