Fix Cucumber reports for cucumber-android

This enables standard Cucumber reports using the 'format' parameter of
CucumberOptions. Reports will be stored on the device.

Author: friederbluemle

android/src/main/java/cucumber/api/android/CucumberInstrumentation.java

@@ -92,7 +92,6 @@ public void onStart() {
         final List<CucumberFeature> cucumberFeatures = runtimeOptions.cucumberFeatures(resourceLoader);
         final int numberOfTests = TestCaseCounter.countTestCasesOf(cucumberFeatures);
 
-        runtimeOptions.getFormatters().clear();
         runtimeOptions.getFormatters().add(new AndroidInstrumentationReporter(runtime, this, numberOfTests));
         runtimeOptions.getFormatters().add(new AndroidLogcatReporter(TAG));
 

examples/android/cukeulator-test/libs/README.md

@@ -12,6 +12,7 @@ and the required jars will **automatically be downloaded.**
 * cucumber-picocontainer (shouldn't be necessary)
 * picocontainer-2.14.3 (shouldn't be necessary)
 * gherkin-2.12.1 (shouldn't be necessary)
+* cucumber-html (only required for HTML reports)
 
 
 * To download the release versions run `ant -f init.xml`.