tree 89cc0f9504793c622c5c7b78d13fdc9b399879e0
parent 70073c45971f342c629c4bef9b5432a66c68de2c
author cws1989 <cws1989@gmail.com> 1321682199 +0000
committer cws1989 <cws1989@gmail.com> 1321682199 +0000

Changes:
1. improve documentation and copy right information
2. update javadoc