Add syntax highlighting to README.md
Merge pull request #1 from edgurgel/patch-1

Add syntax highlighting to README.md
runtime friendliness
small changes
initializing
guards
pattern matching
more examples in readme
replaced def/4 with def/2
minor changes
cleaned up definit
from option
definfo + init pattern match
minor readme modification
introduced set_and_reply, deprecated reply, turned some functions to macros
added advice about gen_servers
tidied mix.exs
fixed bugs emerged in 0.11.0
allowing 0.10.1
ignoring the _build folder