fzf customization - Githubissues

As a user, I want to overwrite fzf options so I can customize this plugin to my liking.

Allow user to set variable to overwrite fzf options on this script (ex: FZF_CTRL_R_OPTS)
Test overwrites work as expected (border overwrite, prompt overwrite, keybinding overwrites)
Merge all fzf related overwrites to one variable
Update docs to reflect updates.

joshmedeski / t-smart-tmux-session-manager