Support camel case syntax within an assertion

Removes support for expect(oneArg) returning an object with .and etc.,
but we can maybe get that back later

Author: papandreou

lib/createTopLevelExpect.js

@@ -1301,11 +1301,7 @@ expectPrototype._createWrappedExpect = function (
     if (arguments.length === 0) {
       throw new Error('The expect function requires at least one parameter.');
     } else if (arguments.length === 1) {
-      return addAdditionalPromiseMethods(
-        makePromise.resolve(subject),
-        wrappedExpect,
-        subject
-      );
+      return parentExpect._camelCaser(subject, context);
     } else if (typeof testDescriptionString === 'function') {
       wrappedExpect.errorMode = 'nested';
       return wrappedExpect.withError(