Merge pull request #19 from mWater/issue9

Fix #9 autofocus
Merge pull request #18 from mWater/null-bitmap

Fix to check for null bitmaps caused by decoding errors on some phones.
Merge pull request #17 from mWater/issue14

Fix #14
Update CameraActivity.java

SurfaceView operations moved from onCreate to onResume.
Changed some objects Boolean to primitive boolean.
Merge pull request #27 from mWater/null-fixes

Null fixes
Merge branch 'master' of https://github.com/shaithana/cordova-plugin-wezka-nativecamera