chore(doc-gen): add new "public" docs configuration

docs/public-docs-package/index.js

@@ -0,0 +1,16 @@
+var Package = require('dgeni').Package;
+var basePackage = require('../dgeni-package');
+
+
+module.exports = new Package('angular-public', [basePackage])
+
+.processor(require('./processors/filterPublicDocs'))
+
+.config(function(parseTagsProcessor) {
+  parseTagsProcessor.tagDefinitions.push({ name: 'publicModule' });
+})
+
+// Configure file writing
+.config(function(writeFilesProcessor) {
+  writeFilesProcessor.outputFolder  = 'dist/public_docs';
+});