Openalias ruby wrapper

Openalias.org is great! There is openalias.rs (written in Rust) to
lookup and parse OpenAlias data.
This is a ruby wrapper around that rust library.

I don't know what I am doing so use at your own risk..and with care.

.travis.yml

@@ -0,0 +1,5 @@
+sudo: false
+language: ruby
+rvm:
+  - 2.4.1
+before_install: gem install bundler -v 1.15.4