Search for README file in whole summary before inserting as first article

lib/parse/parseSummary.js

@@ -1,7 +1,6 @@
 var parseStructureFile = require('./parseStructureFile');
 var Summary = require('../models/summary');
 var SummaryModifier = require('../modifiers').Summary;
-var location = require('../utils/location');
 
 /**
     Parse summary in a book, the summary can only be parsed
@@ -27,11 +26,10 @@ function parseSummary(book) {
             summary = Summary.createFromParts(file, result.parts);
         }
 
-        // Insert readme as first entry
-        var firstArticle = summary.getFirstArticle();
+        // Insert readme as first entry if not in SUMMARY.md
+        var readmeArticle = summary.getByPath(readmeFile.getPath());
 
-        if (readmeFile.exists() &&
-            (!firstArticle || !location.areIdenticalPaths(firstArticle.getRef(), readmeFile.getPath()))) {
+        if (readmeFile.exists() && !readmeArticle) {
             summary = SummaryModifier.unshiftArticle(summary, {
                 title: 'Introduction',
                 ref: readmeFile.getPath()