Add jacoco and coveralls

build.gradle

 apply plugin: 'com.dmdirc.git-version'
 apply plugin: 'java'
 apply plugin: 'maven-publish'
+apply plugin: 'jacoco'
+apply plugin: 'com.github.kt3k.coveralls'
+
 
 sourceSets {
     main {
 
     dependencies {
         classpath group: 'com.dmdirc', name: 'git-version', version: '1.0'
+        classpath 'org.kt3k.gradle.plugin:coveralls-gradle-plugin:2.1.0'
     }
 }
+
+jacocoTestReport {
+    reports {
+        xml.enabled = true // coveralls plugin depends on xml format report
+        html.enabled = true
+    }
+}
+

circle.yml

 
 machine:
   java:
-    version: oraclejdk8
+    version: oraclejdk8
+
+test:
+  post:
+    - ./gradlew client:jacocoTestReport client:coveralls