support `chunked_upload` and `files_put` with Curl PUT method
fix return value of putFile() & typo
fix enbug of `getOAuthHeader()`
[Curl] correction of `fetch()`
[API] set timeout with `set_timeout(600)` on file put
format PHP source and remove `@` prefix
format PHP source
remove `@` operator and fix error handling
format PHP source
Merge branch 'master' into put_support

Conflicts:
	src/Dropbox/OAuth/Curl.php
fix typo (Undefined variable: filename)
Merge pull request #21 from nao-pon/put_support

support `chunked_upload` and `files_put` with curl PUT method