Format everything and add rustfmt to travis (#951)

* Format everything and add rustfmt to travis

* Remove extern crate winit from examples and add force_multiline_blocks

* Format the code properly

* Fix inconsistent period in PULL_REQUEST_TEMPLATE.md

* Only run rustfmt on nightly

* Travis fixings

tests/sync_object.rs

@@ -1,6 +1,5 @@
-
 #[allow(dead_code)]
-fn needs_sync<T:Sync>() {}
+fn needs_sync<T: Sync>() {}
 
 #[test]
 fn window_sync() {