Fix #405 - Added tests for chmod and fchmod using Promises (#458)
Fix #405 - Added tests for chmod and fchmod using Promises (#458)

* Added tests for chmod and fchmod using Promises

* Remove unrelated files from pull request

* Fixed spelling mistake

* Removed redundant catch blocks

humphd/filer,humphd/filer,filerjs/filer,filerjs/filer