SFTP: Removed dead code

variable: $initialize = true, ironically - is initialized but never used.
Feel free to deny if this is reserved for future implementation(s).
Merge pull request #176 from phonzie/patch-4

SFTP: Removed dead code

* phonzie/patch-4:
  SFTP: Removed dead code
SSH2: Continue Subsystem Implementation.

Removed unused piece of code @2352.
Added $this->_get_interactive_channel() to reset(). Unless we don't want to close the subsystem channel?? Leaving that decision up to you.
Merge pull request #178 from phonzie/patch-5

SSH2: Continue Subsystem Implementation.
Removed vim comments

Reformated files
Add people from AUTHORS to composer.json.
Use branch name as a subfolder for code coverage reports.
Use a variable for subfolder string.
Add CodeSniffer as composer development dependency.
Add composer.lock file.
The composer.lock file belongs to the repository. Do not ignore.
Remove all ignores that belong to users global .gitignore file.
Only apply git ignores relative to repository root.
Install composer dependencies on Travis CI.
Add ruleset for phpseclib coding standard.
Run code sniffer on PHP 5.5 environment on Travis CI.
Only install composer dependencies in PHP 5.5 environment.

There is currently no point in installing in any other environment.
Merge pull request #180 from mpscholten/removed-vim-comments

Removed vim comments

* mpscholten/removed-vim-comments:
  Removed vim comments
Updated LICENSE
Merge pull request #183 from bantu/code-coverage-branch-name

Use branch name as a subfolder for code coverage reports

* bantu/code-coverage-branch-name:
  Use a variable for subfolder string.
  Use branch name as a subfolder for code coverage reports.