Add user agent.

app/src/main/java/chat/rocket/android/server/infraestructure/RocketChatClientFactory.kt

 package chat.rocket.android.server.infraestructure
 
+import android.os.Build
+import chat.rocket.android.BuildConfig
+import chat.rocket.android.server.domain.TokenRepository
 import chat.rocket.common.util.PlatformLogger
 import chat.rocket.core.RocketChatClient
-import chat.rocket.android.server.domain.TokenRepository
 import okhttp3.OkHttpClient
 import timber.log.Timber
 import javax.inject.Inject
 import javax.inject.Singleton
 
 @Singleton
-class RocketChatClientFactory @Inject constructor(private val okHttpClient: OkHttpClient,
-                                                  private val repository: TokenRepository,
-                                                  private val logger: PlatformLogger) {
+class RocketChatClientFactory @Inject constructor(
+    private val okHttpClient: OkHttpClient,
+    private val repository: TokenRepository,
+    private val logger: PlatformLogger
+) {
     private val cache = HashMap<String, RocketChatClient>()
 
     fun create(url: String): RocketChatClient {
@@ -23,6 +27,7 @@ class RocketChatClientFactory @Inject constructor(private val okHttpClient: OkHt
         val client = RocketChatClient.create {
             httpClient = okHttpClient
             restUrl = url
+            userAgent = "RC Mobile; Android (${Build.VERSION.RELEASE}); v(${BuildConfig.VERSION_NAME}) ((${BuildConfig.VERSION_CODE}))"
             tokenRepository = repository
             platformLogger = logger
         }