THRIFT-1681: Add Lua Support Patch: Dave Watson

Github Pull Request: This closes #92
diff --git a/test/ThriftTest.thrift b/test/ThriftTest.thrift
index 568ed1b..7ca194e 100644
--- a/test/ThriftTest.thrift
+++ b/test/ThriftTest.thrift
@@ -35,6 +35,7 @@
 namespace php ThriftTest
 namespace delphi Thrift.Test
 namespace cocoa ThriftTest
+namespace lua ThriftTest
 
 // Presence of namespaces and sub-namespaces for which there is
 // no generator should compile with warnings only