Add branch plugin

plugins/branch/branch.plugin.zsh

@@ -0,0 +1,26 @@
+# Branch: displays the current Git or Mercurial branch fast.
+# Victor Torres <vpaivatorres@gmail.com>
+# Oct 2, 2015
+
+function branch_prompt_info() {
+  # Defines path as current directory
+  path=$(pwd)
+  # While current path is not root path
+  while [ $path != '/' ];
+  do
+    # Git repository
+    if [ -d ${path}/.git ];
+    then
+      echo '±' $(/bin/cat ${path}/.git/HEAD | /usr/bin/cut -d / -f 3-)
+      return;
+    fi
+    # Mercurial repository
+    if [ -d ${path}/.hg ];
+    then
+      echo '☿' $(/bin/cat ${path}/.hg/branch)
+      return;
+    fi
+    # Defines path as parent directory and keeps looking for :)
+    path=$(/usr/bin/dirname $path)
+  done
+}