Adds Android version detection to gracefully fail on <4.4 (rather than native crash)
Adds Android version detection to gracefully fail on <4.4 (rather than native crash)

yyfearth/cordova-plugin-secure-storage,Crypho/cordova-plugin-secure-storage,yyfearth/cordova-plugin-secure-storage,demetris-manikas/com.crypho.plugins.securestorage,Crypho/cordova-plugin-secure-storage,Crypho/com.crypho.plugins.securestorage,demetris-manikas/com.crypho.plugins.securestorage,Crypho/com.crypho.plugins.securestorage