Squashed 'emacs.d/yas-drupal/' content from commit a59c848

git-subtree-dir: emacs.d/yas-drupal
git-subtree-split: a59c84873d861cf28e69eacf8bc0f84e707c369d
Merge commit 'dd64bc7f0a7c22930dc1e9e42860decd67c4186f' as 'emacs.d/yas-drupal'
Added yasnippets config and updated readme.