That’s… that’s so much work. Why not just run a few scripts? The terminal is your friend!
http://lapwinglabs.com/blog/hacker-guide-to-setting-up-your-mac
Also, if you’re using vim for MarkDown, why not use it for everything? It can do everything and more that any other standalone editor can do.
And since you’re already in the terminal, why bother leaving to use GitK? Just use git right there in the terminal. Hell, install the fugitive vim plugin and use git right from within Vim! And while we’re at it, might as well use the terminal to browse your databases as well. No point in opening up some GUI there, either.
Point is, CLI EVERYTHING FOREVER. Except your browser and photo editors. CLI is rubbish at that.