refactoring previous project as initial exlang.
Merge pull request #9 from john-hu/exlang-no4

refactoring previous project as initial exlang.
migrate project to intellij
Merge pull request #13 from thomas771020/exlang-no4-migrate-to-intellij

migrate project to intellij, r=johnhu
Issue 21: Add the sample code of facebook connection
close issue #23
Merge pull request #25 from john-hu/remove-custom-title

close issue #23, tested with thomas in Skype conversation.
Merge pull request #22 from john-hu/issue-21

Issue 21: Add the sample code of Facebook connection, r=thomas. close #21.