Automatic tests

[rodrigograca31]

@fordkilleen

when I was updating this plugin I created a dummy cordova project.
something along the lines of:

cordova create test
cd test
cordova plugin add ../cordova-plugin-localization-strings
cordova platform add android
mkdir translations
cd translations
mkdir app
en.json

wrote

{
	"config_ios": {
		"NSCameraUsageDescription": "Take pictures",
		"CFBundleDisplayName": "Some App Name",
		"CFBundleName": "Some App Name"
	},
	"config_android": {
		"app_name": "Some App Name"
	},
	"app": {
		"HAVE_MAIL_TITLE": "You have mail.",
		"HAVE_MAIL_MSG": "%1$@ has you a message titled \\\"%2$@\\\"",
		"test": "test",
		"abc": "def",
		"mochi": "mochi",
	}
}

cordova prepare

and then verified that was properly written with

cat platforms/android/app/src/main/res/values/strings.xml

[rodrigograca31]

more on #83