added AppVeyor configuration (#9)

* added appveyor.yml and AppVeyor badge in README.md * fix appveyor artifacts configuration * appveyor.yml: added cache entry for .gradle * REVERT #bfc66cc: appveyor.yml: added cache entry for .gradle

Author: ollide

README.md

@@ -1,7 +1,8 @@
 intellij-java2smali
 ===================
 
-[![Build Status](https://travis-ci.org/ollide/intellij-java2smali.svg?branch=develop)](https://travis-ci.org/ollide/intellij-java2smali)
+[![Travis Build Status](https://travis-ci.org/ollide/intellij-java2smali.svg?branch=develop)](https://travis-ci.org/ollide/intellij-java2smali)
+[![AppVeyor Build status](https://ci.appveyor.com/api/projects/status/htqnq07bveqh8elv/branch/develop?svg=true)](https://ci.appveyor.com/project/ollide/intellij-java2smali)
 [![Quality Gate status](https://sonarcloud.io/api/badges/gate?key=org.ollide:intellij-java2smali)](https://sonarcloud.io/dashboard?id=org.ollide%3Aintellij-java2smali)
 
 Simple plugin for IntelliJ IDEA & Android Studio to easily compile Java & Kotlin files to smali.

appveyor.yml

@@ -0,0 +1,8 @@
+version: "{branch}-{build}"
+
+build_script:
+ - gradlew.bat assemble
+
+artifacts:
+ - path: 'build\distributions\java2smali-*.zip'
+ name: Java2Smali Plugin