Update Ionic to v1.7.13 (close #1)

Author: beevelop

Dockerfile

@@ -2,6 +2,6 @@ FROM beevelop/cordova
 
 MAINTAINER Maik Hummel <[email protected]>
 
-ENV IONIC_VERSION 1.7.12
+ENV IONIC_VERSION 1.7.13
 
 RUN npm i -g --unsafe-perm ionic@${IONIC_VERSION}