Rename “bootstrap” scripts

They’re just window initialization scripts, and this new naming makes
that a lot clearer.

src/initialize-application-window.coffee

@@ -0,0 +1,13 @@
+# Like sands through the hourglass, so are the days of our lives.
+require './window'
+
+Atom = require './atom'
+window.atom = Atom.loadOrCreate('editor')
+atom.initialize()
+atom.startEditorWindow()
+
+# Workaround for focus getting cleared upon window creation
+windowFocused = ->
+  window.removeEventListener('focus', windowFocused)
+  setTimeout (-> document.querySelector('atom-workspace').focus()), 0
+window.addEventListener('focus', windowFocused)