Only run skeptic in test mode

Author: tomhoule

graphql_client/build.rs

@@ -1,6 +1,9 @@
 extern crate skeptic;
 
 fn main() {
-    // Generates doc tests for the readme.
-    skeptic::generate_doc_tests(&["../README.md"]);
+    #[cfg(tests)]
+    {
+        // Generates doc tests for the readme.
+        skeptic::generate_doc_tests(&["../README.md"]);
+    }
 }