Merge SJL's fork with upstream

Merge branch 'master' of https://github.com/sjl/oh-my-zsh

Conflicts:
	README.textile
	lib/git.zsh
	oh-my-zsh.sh

lib/functions.zsh

@@ -10,8 +10,39 @@ function upgrade_oh_my_zsh() {
   /usr/bin/env ZSH=$ZSH /bin/sh $ZSH/tools/upgrade.sh
 }
 
-function take() {
-  mkdir -p $1
-  cd $1
+function extract() {
+    unset REMOVE_ARCHIVE
+    
+    if test "$1" = "-r"; then
+        REMOVE=1
+        shift
+    fi
+  if [[ -f $1 ]]; then
+    case $1 in
+      *.tar.bz2) tar xvjf $1;;
+      *.tar.gz) tar xvzf $1;;
+      *.tar.xz) tar xvJf $1;;
+      *.tar.lzma) tar --lzma -xvf $1;;
+      *.bz2) bunzip $1;;
+      *.rar) unrar x $1;;
+      *.gz) gunzip $1;;
+      *.tar) tar xvf $1;;
+      *.tbz2) tar xvjf $1;;
+      *.tgz) tar xvzf $1;;
+      *.zip) unzip $1;;
+      *.Z) uncompress $1;;
+      *.7z) 7z x $1;;
+      *) echo "'$1' cannot be extracted via >extract<";;
+    esac
+
+    if [[ $REMOVE_ARCHIVE -eq 1 ]]; then
+        echo removing "$1";
+        /bin/rm "$1";
+    fi
+
+  else
+    echo "'$1' is not a valid file"
+  fi
 }
 
+