.functions: Make gi accept any number of arguments

Closes mathiasbynens#367.

.functions

@@ -248,8 +248,7 @@ function unquarantine() {
 # Install Grunt plugins and add them as `devDependencies` to `package.json`
 # Usage: `gi contrib-watch contrib-uglify zopfli`
 function gi() {
-	local IFS=,
-	eval npm install --save-dev grunt-{"$*"}
+	npm install --save-dev ${*/#/grunt-}
 }
 
 # `m` with no arguments opens the current directory in TextMate, otherwise