Include src as a part of npm package

It would be nice to consume sources as it is to bundle it with not amd loader, e.g. it is hard to consume generated amd modules with webpack.

.npmignore

@@ -1,6 +1,5 @@
 /.vscode/
 /out/
-/src/
 /test/
 /gulpfile.js
 /tsconfig.json