v0.6.3 Prep (#433)

* update badge

* minor update

* prep v`0.6.1`

* Doc improvements

* ref fix

* v0.6.2 prep

* v0.6.3 prep

Author: pulsipher

Project.toml

@@ -1,6 +1,6 @@
 name = "InfiniteOpt"
 uuid = "20393b10-9daf-11e9-18c9-8db751c92c57"
-version = "0.6.2"
+version = "0.6.3"
 authors = ["Joshua Pulsipher and colleagues"]
 
 [deps]