Renamed the "init_github" function to "githubi".
Converted the "gho" alias to a function.
Renamed the _process_option function to _process_dots_option.
Renamed the "gho" function to "gh" and enhanced with multiple options for opening project in default browswer.

* o: Open GitHub project in default browser."
* c: Open GitHub project commit(s) in default browser."
* b: Open GitHub project branches in default browser."
* t: Open GitHub project tags (releases) in default browser."
* u: Print GitHub project URL."
* q: Quit/Exit."