#73 - Be able to choose terminal theme

Features:
- Theme
- Tab Title

Configuration sample:
"hosts": [
		{
			"name": "Shuttle Connection",
			"cmd": "ssh shuttle@shuttleServer",
			"theme":"Basic",
                        "title":" Shuttle Tab Example"

		}
            ]

Note: If the theme value does not exists, the default theme will be used. Themes are available on Terminal.app and iTerm preferences.