Added ctags dotfile

Currently has options for markdown, go, and neosnippet files, as well as
some configuration options.

.ctags

@@ -0,0 +1,25 @@
+--recurse=yes
+--tag-relative=yes
+--totals=yes
+--extra=+f
+--exclude=.git
+--exclude=__pycache__
+
+--langdef=markdown
+--langmap=markdown:.md.mdown.mkdown.markdown
+--regex-markdown=/^# (.*)(#)?/\1/1,header1/
+--regex-markdown=/^#{2} (.*)(#{2})?/\1/2,header2/
+--regex-markdown=/^#{3} (.*)(#{3})?/\1/3,header3/
+--regex-markdown=/^#{4} (.*)(#{4})?/\1/4,header4/
+--regex-markdown=/^#{5} (.*)(#{5})?/\1/5,header5/
+--regex-markdown=/^#{6} (.*)(#{6})?/\1/6,header6/
+--regex-markdown=/^#{7} (.*)(#{7})?/\1/7,header7/
+
+--langdef=go
+--langmap=go:.go
+--regex-go=/func([ \t]+\([^)]+\))?[ \t]+([a-zA-Z0-9_]+)/\2/f,func/
+--regex-go=/type[ \t]+([a-zA-Z_][a-zA-Z0-9_]+)/\1/t,type/
+
+--langdef=neosnippet
+--langmap=neosnippet:.snip
+--regex-neosnippet=/^snippet\s+(\S+).*/\1/s,snippet/