Add Findbugs

Author: AustinShalit

build.gradle

@@ -90,6 +90,7 @@ allprojects {
     apply plugin: 'jacoco'
     apply plugin: 'net.ltgt.errorprone'
     apply plugin: 'checkstyle'
+    apply plugin: 'findbugs'
 
     configurations.errorprone {
         resolutionStrategy.force 'com.google.errorprone:error_prone_core:2.0.9'
@@ -106,6 +107,17 @@ allprojects {
         it.dependsOn = []
     }
 
+    tasks.withType(FindBugs) {
+        it.dependsOn = []
+    }
+
+    findbugs {
+        // toolVersion = "2.0.1"
+        sourceSets = [sourceSets.main]
+        excludeFilter = new File(rootDir, "findBugsSuppressions.xml")
+        effort = "max"
+    }
+
     repositories {
         mavenCentral()
         jcenter()

findBugsSuppressions.xml

@@ -0,0 +1,8 @@
+<FindBugsFilter>
+    <Match>
+        <Package name="~edu\.wpi\.grip\.generated.*" />
+    </Match>
+    <Match>
+        <Bug pattern="RV_RETURN_VALUE_IGNORED_BAD_PRACTICE" />
+    </Match>
+</FindBugsFilter>