cca 0.6.0

Release Notes:

• Updated cordova-android to use latest 4.0.0-dev version
• Updated cordova-ios to 3.8.0 (Fixes exec() bridge <iframe> explosion bug)
• Updated Crosswalk to version 11
• Android now sets target-sdk=21 (Lollipop)
• Content-Security-Policy now works and enabled by default (can be disabled though)
• cca is now smarter about not adding iOS when building for Android (and vice-versa)
• Pin major version of bootstrap, i18n, and navigation plugins (cca will no longer break when plugins are updated)
• Generate <icon> within config.xml rather than copy files directly (Fixes iPhone 6+ issues)
• Android builds now work the same when built via Android Studio vs. command-line
• No longer rename _locales -> CCA_locales
• Ignore <!-- html --> when parsing main page (fixes #510)
• Add cca build --android-minSdkVersion flag
• Add cca run --list to list available deploy targets
• Add cca run --link to link rather than copy native source files (useful when developing plugins)
• cca push now works on node 0.12
• Don't build multi-arch apks when --webview=system is used.
• Added "new version of cca available" logic via update-notifier module
• New publishing instructions on how to use Crosswalk for pre-L Android, and system webview for L+