Update Crosswalk Version

[newbsauce]

Builds that were working a week ago are now failing due to CCA configured by default to use an out dated crosswalk version. I can't figure out how to update it.

org.xwalk:xwalk_core_library_beta:18+
FAILURE: Build failed with an exception.

• What went wrong:
  A problem occurred configuring root project 'android'.

  Could not resolve all dependencies for configuration ':_armv7DebugCompile'.
  Could not find any version that matches org.xwalk:xwalk_core_library_beta:18+.
  Searched in the following locations:
  https://repo1.maven.org/maven2/org/xwalk/xwalk_core_library_beta/maven-metadata.xml

As discovered by others: issues/592 one cannot update the version via the traditional config.xml file. They stated to specify the version use the mobile manifest file. However, i'm unsure what json string its looking for to do this. I've attempted adding "xwalkVersion":"xwalk_core_library:18+" ..ect without luck. Any help would be greatly appreciated!

[newbsauce]

Finally found it, app now builds by adding
"webview": "crosswalk@18+",
to the mobile manifest