Tgcli

Changed
- Moved `--secure/--no-secure` flag to root of app.
- Moved `--token` flag to `bot` subcommand.

Added
- Added `--secure/--no-secure` flag in order to verify Telegram API HTTPS certificate.

Changed
- Fixed [issue](https://github.com/erayerdin/tgcli/issues/4) regarding OpenSSL issues on OSX.

Changed
- Fixed a possible minor bug about possible inconsistent response from Telegram BOT API.

Changed
- Updated `MANIFEST.in` for `tests_require` in `setup.py`.

Added
- Added documentation.
- Now `bot send` command accepts `-f/--file`, which sends file.

Changed
- `-f` flag in `bot send` now does not stand for `--format`, it stands for `--file`.

Added
- Added `MANIFEST.in` to setup.