Update README.md

Author: windy1

README.md

@@ -68,7 +68,7 @@ dependencies {
 ```
 
 Or just download the JAR with all dependencies included from the
-[releases](https://github.com/windy1/google-places-api-java/releases).
+[releases](https://github.com/windy1/google-places-api-java/releases). **Do not use the JAR if you are using Android, it will cause an error.**
 
 
 ## Creating the client
@@ -316,4 +316,4 @@ Documentation for this project can be found at [this location](http://windy1.git
 ## Build
 
 This project uses [Apache Maven](http://maven.apache.org/). Create a file called `src/main/resources/places_api.key`
-with your Google Places API key before running tests and building with `mvn`.
+with your Google Places API key before running tests and building with `mvn`.