Merged in mrman208's additions.
diff --git a/themes/base.theme.bash b/themes/base.theme.bash
index 30fa539..f898875 100644
--- a/themes/base.theme.bash
+++ b/themes/base.theme.bash
@@ -21,7 +21,7 @@
 }
 
 
-function rvm_version_prompt {
+function rvm_version_prompt() {
   if which rvm &> /dev/null; then
     rvm=$(rvm tools identifier) || return
     echo -e "$RVM_THEME_PROMPT_PREFIX$rvm$RVM_THEME_PROMPT_SUFFIX"