chore(docs): initial dgeni docs generation

Closes #261

docs/dgeni-package/processors/processModuleDocs.js

@@ -0,0 +1,46 @@
+var _ = require('lodash');
+
+module.exports = function processModuleDocs(log, ExportTreeVisitor, getJSDocComment) {
+
+  return {
+    $runAfter: ['files-read'],
+    $runBefore: ['parsing-tags', 'generateDocsFromComments'],
+    $process: function(docs) {
+      var exportDocs = [];
+      _.forEach(docs, function(doc) {
+        if ( doc.docType === 'module' ) {
+
+          log.debug('processing', doc.moduleTree.moduleName);
+
+          doc.exports = [];
+
+          if ( doc.moduleTree.visit ) {
+            var visitor = new ExportTreeVisitor();
+            visitor.visit(doc.moduleTree);
+
+            _.forEach(visitor.exports, function(exportDoc) {
+
+              doc.exports.push(exportDoc);
+              exportDocs.push(exportDoc);
+              exportDoc.moduleDoc = doc;
+
+              if (exportDoc.comment) {
+                // If this export has a comment, remove it from the list of
+                // comments collected in the module
+                var index = doc.comments.indexOf(exportDoc.comment);
+                if ( index !== -1 ) {
+                  doc.comments.splice(index, 1);
+                }
+
+                _.assign(exportDoc, getJSDocComment(exportDoc.comment));
+              }
+
+            });
+          }
+        }
+      });
+
+      return docs.concat(exportDocs);
+    }
+  };
+};