Merge pull request #524 from leofang/version

Add 0.2.0 to version selector

Author: leofang

cuda_core/docs/versions.json

@@ -1,5 +1,6 @@
 {
     "latest"  : "latest",
+    "0.2.0"   : "0.2.0",
     "0.1.1"   : "0.1.1",
     "0.1.0"   : "0.1.0"
 }