added jacoco plugin

Author: rajpatta

app/build.gradle

@@ -1,7 +1,9 @@
 apply plugin: 'com.android.application'
 apply plugin: 'spoon'
-
-
+apply plugin: 'jacoco'
+jacoco {
+    toolVersion='0.7.5.201505241946'
+}
 buildscript {
     repositories {
         mavenCentral()
@@ -29,6 +31,9 @@ android {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
+        debug {
+            testCoverageEnabled true
+        }
     }
 }
 
@@ -39,7 +44,7 @@ dependencies {
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.1'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
-    androidTestCompile 'com.squareup.spoon:spoon-client:1.7.1'
+    androidTestImplementation 'com.squareup.spoon:spoon-client:1.7.1'
 }
 
 spoon {