Ensure consistent code style and indentation

prompt.sh

@@ -1,10 +1,9 @@
 find_git_branch() {
-   local branch
   # Based on: http://stackoverflow.com/a/13003854/170413
-   if branch=$(git rev-parse --abbrev-ref HEAD 2> /dev/null)
-   then
+  local branch
+  if branch=$(git rev-parse --abbrev-ref HEAD 2> /dev/null); then
     if [[ "$branch" == "HEAD" ]]; then
-         branch='(detached head)'
+      branch='detached*'
     fi
     git_branch="($branch)"
   else