Add code quality plugins to build.gradle (jacoco, findbugs)

build.gradle

@@ -7,12 +7,49 @@ description = 'RxJava: Reactive Extensions for the JVM – a library for composi
 
 apply plugin: 'rxjava-project'
 apply plugin: 'java'
+apply plugin: 'findbugs'
+apply plugin: 'jacoco'
 
 dependencies {
     testCompile 'junit:junit-dep:4.10'
     testCompile 'org.mockito:mockito-core:1.8.5'
 }
 
+////////////////////////////////////////////////////////////////////
+// to run findbugs: 
+//     ./gradlew check
+// then open build/reports/findbugs/main.html
+////////////////////////////////////////////////////////////////////
+
+findbugs {
+  ignoreFailures = true
+  toolVersion = "+"
+  sourceSets = [sourceSets.main]
+  reportsDir = file("$project.buildDir/reports/findbugs")
+  effort = "max"
+}
+
+//////////////////////////////////////////////////////////////////
+// to run jacoco: 
+//     ./gradlew test jacocoTestReport
+// to run jacoco on a single test (matches OperatorRetry to OperatorRetryTest in test code base):
+//     ./gradlew -Dtest.single=OperatorRetry test jacocoTestReport
+// then open build/reports/jacoco/index.html
+/////////////////////////////////////////////////////////////////
+
+jacoco {
+    toolVersion = "+"
+    reportsDir = file("$buildDir/customJacocoReportDir")
+}
+
+jacocoTestReport {
+    reports {
+        xml.enabled false
+        csv.enabled false
+        html.destination "${buildDir}/reports/jacoco"
+    }
+}
+
 javadoc {
     exclude "**/rx/internal/**"
 }
@@ -30,3 +67,10 @@ if (project.hasProperty('release.useLastTag')) {
 test{
      maxHeapSize = "2g"
 }
+
+tasks.withType(FindBugs) {
+    reports {
+        xml.enabled = false
+        html.enabled = true
+    }
+ }