Backfill specs and setup CI

- [x] Add model specs
- [ ] Add controller specs
- [x] Add route specs
- [ ] Add feature specs
- [x] Add travis ci badge
- [x] Add code climate badge
- [ ] Add code climate test coverage
I am having trouble getting this spec to pass. I've tried moving it around.
```
1) routes for ArticlesController GET '/articles/page' routes to ArticlesController#index
     Failure/Error: expect(get("/articles/page")).to route_to("articles#index")
       No route matches "/articles/page"
     # ./spec/routing/articles_routes_spec.rb:17:in `block (2 levels) in <top (required)>'
     # ./spec/spec_helper.rb:37:in `block (3 levels) in <top (required)>'
     # ./spec/spec_helper.rb:36:in `block (2 levels) in <top (required)>'
```
https://travis-ci.org/homesteading/homesteading-article/builds/27445908#L182