title: Unable to run appium test due to appiumDriver
body: <p>Been having this issue in my stack trace when trying to run my appium and I have been trying a lot of things to fix it but no luck. What do I need to do to fix the following issue?</p>
  
  <pre><code>[BaseDriver] Session created with session id: xxxxxxxxxxxxxxxxxxx-xxxxxxxxxxxxx
  [AndroidDriver] Java version is: 1.8.0_201
  [HTTP] &lt;-- POST /wd/hub/session 500 130 ms - 598
  [HTTP] 
  [HTTP] --&gt; POST /wd/hub/session
  [HTTP] {"desiredCapabilities":{"app":"./xxxx.apk","appPackage":"xxxx","hub":"http://xxxx:xxxx/wd/hub","platformVersion":"6.0.1","automationName":"appium","appWaitActivity":"xxx.xxxx.LoginActivity","browserName":"","udid":"xxx","platformName":"Android","deviceName":"Galaxy S6"},"requiredCapabilities":{}}
  [Appium] DeprecationWarning: 'automationName' capability was not provided. Future versions of Appium will require 'automationName' capability to be set for Android sessions.
  </code></pre>
  
  <p>Further down it then states:</p>
  
  <pre><code>Tests in error: 
    Could not instantiate class io.appium.java_client.AppiumDriver
    Could not instantiate class io.appium.java_client.AppiumDriver
  </code></pre>
  
  <p>Calling from serenity properties:</p>
  
  <pre><code>webdriver.driver= appium
  appium.hub = http://xxx/wd/hub
  appium.automationName=appium
  appium.platformName = Android
  
  ####### Android CAPS Real Device ######
  
  appium.platformVersion = 6.0.1
  appium.browserName =
  serenity.take.screenshots= AFTER_EACH_STEP
  webdriver.timeouts.implicitlywait = 5000
  
  
  appium.app=./xxx.apk
  appium.appPackage = xxx
  appium.appWaitActivity = xxx.LoginActivity
  
  ## TestTeam Galaxy S6
  appium.deviceName = Galaxy S6
  appium.udid = xxx
  </code></pre>