Linux support

[tomlin7]

The editor is currently not supporting linux operating system.

Bugs

Bugs identified so far.

• keysym <Control-`> doesn't work
• cmd is not recognized in linux
• tk-extrafont library have trouble installing in linux

Fixes:

• System data class #21
  A class to hold all needed data of the working machine. This shall include operating system, version, python version, etc.
• Configure new keysym to replace <Control-`> when on linux.
• instead of cmd use bash in linux (make choice based on platform.system())
• add fixes to avoid the error while installing tk-extrafont in linux

[cid0rz]

nice! I will continue investigating. Didnt want to open the issue myself, so thanks :)

[tomlin7]

#22 Added SysInfo class, so for system info now it is possible to do base.sysinfo.os, base.sysinfo.version, base.sysinfo.python_version, etc.