Merge pull request kbjr#8 from woolfg/gitpull

git pull method added

Author: kbjr

Git.php

@@ -448,6 +448,20 @@ public function push($remote, $branch)
         return $this->run("push --tags $remote $branch");
     }
 
+    /**
+     * Pull specific branch from remote
+     *
+     * Accepts the name of the remote and local branch
+     *
+     * @param string $remote
+     * @param string $branch
+     * @return string
+     */
+    public function pull($remote, $branch)
+    {
+        return $this->run("pull $remote $branch");
+    }
+
     /**
      * Sets the project description.
      *