Add scan button
Merge remote-tracking branch 'okfn/master'

Conflicts:
	bin/AndroidManifest.xml
	bin/ProductOpenData.apk
	bin/classes.dex
	bin/classes/org/okfn/pod/GtinFoundActivity.class
	bin/classes/org/okfn/pod/MainActivity.class
	bin/classes/org/okfn/pod/R$string.class
	bin/classes/org/okfn/pod/R$style.class
	bin/resources.ap_
	gen/org/okfn/pod/R.java