Github: handling branches containing '/'

Prior to this, when processing the payload sent by the Github webhook
(via checkin.php), the commit() method would truncate a branch after the
first contained '/', i.e. 'dev/1.1.0' would be saved as 'dev'.

By using explode()'s limit parameter when splitting the branch ref we
get from the Github payload, we keep everything after the 2nd '/'.

Fixes #193

Author: dregad

SourceGithub/SourceGithub.php

@@ -316,7 +316,7 @@ public function commit( $p_repo, $p_data ) {
 			$t_commits[] = $t_commit['id'];
 		}
 
-		$t_refData = explode( '/',$p_data['ref'] );
+		$t_refData = explode( '/', $p_data['ref'], 3 );
 		$t_branch = $t_refData[2];
 
 		return $this->import_commits( $p_repo, $t_commits, $t_branch );