Add pac4j

```
$ vim build.sdt
```
Add twitter GlobalSetting

```
$ vim app/controllers/Application.scala
```
Create sequence OauthUrl
Add login view

```
$ vim app/views/index.scala.html
```
Fix controllers
Change play version

```
$ vim project/plugins.sbt
```
Add Oauth result aciton

```
$ vim app/controllers/Application.scala
```
Add result view

```
$ vim app/views/result.scala.html
```
Add Oauth route

```
$ vim conf/routes
```
Show profile

```
$ vim app/controllers/Application.scala
$ vim app/views/result.scala.html
```