add wp8

corodva platform add wp had the wrong path, so added manually

"C:\Users\don\.cordova\lib\wp\cordova\3.1.0\wp8\bin\create"
"c:\Users\don\phonegap-nfc-reader\platforms\wp8" "com.megster.nfc.reader"
"NfcReader"
remove www since files are copied
ignore for wp8