updated pom to contain evernote license for maven central
updated pom to contain evernote license for maven central

evernote/evernote-sdk-android,AlexBravo/evernote-sdk-android,allentcm/evernote-sdk-android,artisJIANG/evernote-sdk-android,fivef/add_to_evernote_note,HiWong/evernote-sdk-android