Changed android and ios testing dependencies as provided so those are not included in fat-jar

Instructions how to take ios/android testing to use with Maven

Fixes #62

Forcing to use Trusty image

Author: Hi-Fi

.travis.yml

@@ -1,4 +1,5 @@
 language: java
+dist: trusty
 
 matrix:
   include:

README.md

@@ -60,7 +60,7 @@ which contains all required libraries. Running of tests with this can be done wi
   and place it in your PYTHONPATH.
 
 Usage, Selenium 4 (WIP)
------------------
+-----------------------
 
 If you are using the robotframework-maven-plugin you can
 use this library by adding the following dependency to 
@@ -75,14 +75,19 @@ your pom.xml:
 
 If you cannot use the robotframework-maven-plugin you can use the
 [jar-with-dependencies](https://repo1.maven.org/maven2/com/github/hi-fi/robotframework-seleniumlibrary/4.0.0-alpha-1.0/robotframework-seleniumlibrary-4.0.0-alpha-1.0-jar-with-dependencies.jar),
-which contains all required libraries. Running of tests with this can be done with command `java -jar robotframework-seleniumlibrary-4.0.0-alpha-1.0-jar-with-dependencies.jar <test location>`.  
+which contains all required libraries except ios/android ones (Appium and Selendroid). Running of tests with this can be done with command `java -jar robotframework-seleniumlibrary-4.0.0-alpha-1.0-jar-with-dependencies.jar <test location>`.  
 
 * More information about this library can be found in the
   [Keyword Documentation](https://repo1.maven.org/maven2/com/github/hi-fi/robotframework-seleniumlibrary/4.0.0-alpha-1.0/robotframework-seleniumlibrary-4.0.0-alpha-1.0.html).
 * For keyword completion in RIDE you can download this
   [Library Specs](https://repo1.maven.org/maven2/com/github/hi-fi/robotframework-seleniumlibrary/4.0.0-alpha-1.0/robotframework-seleniumlibrary-4.0.0-alpha-1.0.xml)
   and place it in your PYTHONPATH.
 
+Testing IOS/Android browsers with library
+-----------------------------------------
+Pre-Selenium 4 fat-jar contains Appium and Selendroid that allow testing of IOS and Android browsers. Those are dropped in Selenium 4 -versions,
+so dependencies needs to be handles self with either Maven/Gradle or manually. If there's need to have fat-jar with those, please create issue about that.
+
 Differences
 -----------
 

pom.xml

@@ -113,6 +113,7 @@
 					<artifactId>selenium-java</artifactId>
 				</exclusion>
 			</exclusions>
+			<scope>provided</scope>
 		</dependency>
 		<dependency>
 			<groupId>io.appium</groupId>
@@ -128,6 +129,7 @@
 					<artifactId>selenium-api</artifactId>
 				</exclusion>
 			</exclusions>
+			<scope>provided</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.commons</groupId>