Added info about changes in v1.4.0.
Added info about changes in v1.4.0.

nordnet/cordova-hot-code-push,davidovich/cordova-hot-code-push,nordnet/cordova-hot-code-push,mnewmedia/cordova-hot-code-push,limexcomputer/cordova-hot-code-push,davidovich/cordova-hot-code-push,mnewmedia/cordova-hot-code-push,limexcomputer/cordova-hot-code-push