Move all core files into src/core.

Move Browser & Node specs to test against lib/jasmine.js instead of the separate source. Yes, this makes development a little harder but it's better to test that jasmine.js was built correctly.

src/core/version.json

@@ -0,0 +1,5 @@
+{
+  "major": 1,
+  "minor": 1,
+  "build": 0
+}