Bump version to 2.5.1 (#384)

Author: jcesarmobile

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cordova-plugin-ionic-webview",
-  "version": "2.5.0",
+  "version": "2.5.1",
   "description": "Ionic Web View Engine Plugin",
   "scripts": {
     "sync_plugin_xml": "sync-cordova-xml package.json plugin.xml --output=plugin.xml",

plugin.xml

@@ -19,7 +19,7 @@
   under the License.
 -->
 
-<plugin xmlns="http://apache.org/cordova/ns/plugins/1.0" xmlns:rim="http://www.blackberry.com/ns/widgets" xmlns:android="http://schemas.android.com/apk/res/android" id="cordova-plugin-ionic-webview" version="2.5.0">
+<plugin xmlns="http://apache.org/cordova/ns/plugins/1.0" xmlns:rim="http://www.blackberry.com/ns/widgets" xmlns:android="http://schemas.android.com/apk/res/android" id="cordova-plugin-ionic-webview" version="2.5.1">
     <name>cordova-plugin-ionic-webview</name>
     <description>Ionic Web View Engine Plugin</description>
     <license>Apache-2.0</license>