Merge pull request #52 from tswicegood/rvm-enhancements

Optimize how RVM is loaded and add RVM auto completion.

plugins/available/rvm.plugin.bash

@@ -1,16 +1,29 @@
 #!/bin/bash
-switch () {
+
+# Load RVM, if you are using it
+[[ -s $HOME/.rvm/scripts/rvm ]] && source $HOME/.rvm/scripts/rvm
+
+# Check to make sure that RVM is actually loaded before adding
+# the customizations to it.
+if [ "$rvm_path" ]
+then
+    # Load the auto-completion script if RVM was loaded.
+    [[ -r $rvm_path/scripts/completion ]] && . $rvm_path/scripts/completion
+
+    switch () {
       rvm $1
       local v=$(rvm_version)
       rvm wrapper $1 textmate
       echo "Switch to Ruby version: "$v
-}
+    }
 
-rvm_default () {
+    rvm_default () {
       rvm --default $1
       rvm wrapper $1 textmate
-}
+    }
 
-function rvm_version () {
+    function rvm_version () {
       ruby --version
-}
+    }
+
+fi