Created a small app last night to take pictures using the phone camera.
You can get it here:
Checked on iPhone 5S and Android Kit Kat.
I am only using an html file and a js file along with the config.xml.
You can get the code from my github repository. You can remove the resource files from config.xml. I just got it from the base template.
To add the plugin , in Config.xml you need to have: