Quick and dirty Sublime Text 3 plugin to create a new Jekyll post.

myJekyll.py

import sublime, sublime_plugin, time

class MyJekyllCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        self.view.window().show_input_panel("Name of New Post", "", self.create_post, None, None)

    def create_post(self, theTitle):
        date = time.strftime("%Y-%m-%d-")
        safeTitle = date + theTitle.lower().replace(" ","-")
        path = "/Users/dansheffler/Dropbox/dansheffler/_posts/" + safeTitle + ".md"
        newFile = open(path, "w")
        newFile.write("---\nTitle: " + theTitle + "\n---\n\n")
        newFile.close()
        self.view.window().open_file(path)