Merge pull request #7 from soundmonster/master

Do not fail if resource table has not been found.
[maven-release-plugin] prepare release apk-parser-1.2.1
[maven-release-plugin] prepare for next development iteration
refractor resource table logic ;use jdk Locale class
[maven-release-plugin] prepare release apk-parser-1.3.0
[maven-release-plugin] prepare for next development iteration
Update README.md
Update README.md
add check sign method; add get icon method
[maven-release-plugin] prepare release apk-parser-1.3.1
[maven-release-plugin] prepare for next development iteration
change sdkVersion type to String, so can deal with android L
[maven-release-plugin] prepare release apk-parser-1.4.0
[maven-release-plugin] prepare for next development iteration
add more into to certificate meta data
add native support info to apkmeta
[maven-release-plugin] prepare release apk-parser-1.4.1
[maven-release-plugin] prepare for next development iteration
Update README.md
change groupid