Should we use silhouette or play-silhouette as name in build.sbt

Currently in build.sbt the name is defined as silhouette. So we must define the dependencies as:

```
"com.mohiva" %% "silhouette" % "1.0-SNAPSHOT"
```

Or should we rather define the name as play-silhouette so we can define the dependency as:

```
"com.mohiva" %% "play-silhouette" % "1.0-SNAPSHOT"
```