improve enh-ruby-mode init.
fix enh-ruby-mode ruby bin path issue.
custom enh-ruby-mode faces.
improve robe-mode init.
add inf-ruby-mode into auto-complete list.
change smartparens init file allout outline markers.
add additional font-locking feature for clojure-mode. (But it is not good yet.)
improve TeX init file and setup extension auto-complete-latex.
change mu4e faces.
disable auto-load extension direx in el-get.
disable auto start Sauron.