Update README.md

added code snippet

Author: azizcse

README.md

@@ -19,8 +19,72 @@ buildTypes {
 
 ![Alt Text](https://github.com/azizcse/Android-code-coverage/blob/master/img/run_test.png)
 
-# Jacoco coverage report
+# Code coverage with Jacoco
 
+ use jacoco in root gradle
+```
+classpath "org.jacoco:org.jacoco.core:$jacocoVersion"
+```
+In app.gradle add below snippet 
+
+```
+apply plugin: 'jacoco'
+
+jacoco {
+    toolVersion = "$jacocoVersion"
+}
+
+tasks.withType(Test) {
+    jacoco.includeNoLocationClasses = true
+}
+
+task jacocoTestReport(type: JacocoReport, dependsOn: ['testDebugUnitTest', 'createDebugCoverageReport']) {
+
+    reports {
+        xml.enabled = true
+        html.enabled = true
+    }
+
+    def fileFilter = ['**/R.class', '**/R$*.class', '**/BuildConfig.*', '**/Manifest*.*', '**/*Test*.*', 'android/**/*.*', '**/*$[0-9].*']
+    def debugTree = fileTree(dir: "$project.buildDir/tmp/kotlin-classes/debug", excludes: fileFilter)
+    def mainSrc = "$project.projectDir/src/main/kotlin"
+
+    sourceDirectories = files([mainSrc])
+    classDirectories = files([debugTree])
+    executionData = fileTree(dir: project.buildDir, includes: ['jacoco/testDebugUnitTest.exec',
+                                                               'outputs/code_coverage/debugAndroidTest/connected/**/*.ec'])
+}
+
+android {
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
+        test.java.srcDirs += 'src/test/kotlin'
+        androidTest.java.srcDirs += 'src/androidTest/kotlin'
+    }
+
+    buildTypes {
+        debug {
+            testCoverageEnabled true
+        }
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            testCoverageEnabled true
+        }
+    }
+
+    testOptions {
+        execution 'ANDROIDX_TEST_ORCHESTRATOR'
+        animationsDisabled true
+
+        unitTests {
+            includeAndroidResources = true
+        }
+    }
+}
+
+```
 ### Run below command in Android studio Terminal
 
 */gradlew jacocoTestReport*