add os ua
rename
add space
comment long time test
Merge pull request #50 from longbai/multi-host

add os ua
Update .travis.yml
Update .travis.yml
use travis android
rm build
build sdk version change
add wait for emulator
Merge pull request #51 from longbai/update-test

use travis android
refactor file uri
refactor base64 method
refactor put method
refactor
refactor put
refactor inputstream
Merge pull request #52 from longbai/multi-up-host

重构部分代码
add qiniu exception