More doc updates, explanation of serverless. (#228)

* More doc updates, explanation of serverless.

* Moved howto directory to examples and some minor doc updates.

* Added apps and routes docs.

* Fixes for Carlos' comments.

* Added bit about importing lambda functions.

examples/hello/node/hello.js

@@ -0,0 +1,9 @@
+name = "World";
+fs = require('fs');
+try {
+	obj = JSON.parse(fs.readFileSync('/dev/stdin').toString())
+	if (obj.name != "") {
+		name = obj.name
+	}
+} catch(e) {}
+console.log("Hello", name, "from Node!");