* Add rmdir() to type definition.
* Bump version number in comment header.
* Remove patch level version number to fix tests
* Update tests to include an rmdir() invocation.
* Added missing encoding argument to get and put methods
* Added tests for encoding parameter in get and put, added additional test for put with first parameter as ReadableStream
* Edited list of contributors for ssh2-sftp-client types
* Added tslint
* Fixed lint issues, updated imports in test
* Fix ssh-sftp-client import in test
