remove IterableToFileAdapter
Merge pull request #7 from yejingx/dev

remove IterableToFileAdapter
fix pep8 warning
up.usage add the return type check
update README.md
optimaze UpYunClientException
update README.md
update README.md
bumped version to 2.2.1
replace try.py with unittest cases
add Makefile
run test without install
improve test cases
update README.md
fix unittest script
fix unittest script
add travis-ci support
test cases compatible with 2.6
add travis-ci icon
temp