Better setup documentation needed

[mapk]

It appears that the setup is missing some documentation for dependencies, etc.

AppComonent.java

• @Singleton was giving an error. Documentation was missing instructions to add this line to the file. import javax.inject.Singleton;
• @Component was also giving an error. Documentation was missing instructions to add this line to the file. import dagger.Component;

ExampleApp.java

• This line WellSql.init(new WellSqlConfig(getApplicationContext())); was showing WellSqlConfig in red. Documentation was missing instructions to add this line import org.wordpress.android.fluxc.persistence.WellSqlConfig;
• This line .appContextModule(new AppContextModule(getApplicationContext())) is also erroring out b/c the documentation doesn't instruct to add this line import org.wordpress.android.fluxc.module.AppContextModule;

[mapk]

Also noticed this AppComonent.java file needed some imports as well.

import org.wordpress.android.fluxc.module.AppContextModule;
import org.wordpress.android.fluxc.module.ReleaseBaseModule;
import org.wordpress.android.fluxc.module.ReleaseNetworkModule;
import org.wordpress.android.fluxc.module.ReleaseOkHttpClientModule;
import org.wordpress.android.fluxc.module.ReleaseStoreModule;

All These things together allowed a successful build.