Detect and Parse string separated module names (#787)

* detecting and parsing string separated module names

* test fix

* parsing multiple input methods

* travis fix

* test cases

* requested changes made

* test fix

* rebase and fix conflicts

src/InsertStep.js

@@ -6,6 +6,9 @@ function InsertStep(ref, index, name, o) {
     return ref.importJSON(ref.sequences[name]);
   }
 
+  if (ref.detectStringSyntax(name)) {
+    return ref.stringToSteps(name)
+  }
 
   function insertStep(index, name, o_) {
     if (ref.modules[name]) var moduleInfo = ref.modules[name][1];