upgrade gradle

app/build.gradle

@@ -1,10 +1,4 @@
 apply plugin: 'com.android.application'
-apply plugin: 'findbugs'
-
-findbugs {
-    sourceSets = []
-    ignoreFailures = false
-}
 
 android {
     compileSdkVersion 26
@@ -12,9 +6,10 @@ android {
     defaultConfig {
         applicationId "de.rochefort.childmonitor"
         minSdkVersion 21
+        //noinspection ExpiredTargetSdkVersion
         targetSdkVersion 26
         versionCode 5
-        versionName "0.5"
+        versionName "1.0"
     }
 
     buildTypes {
@@ -24,26 +19,12 @@ android {
         }
     }
 
+    lintOptions {
+        abortOnError false
+    }
+
+
     dependencies {
         compile "com.android.support:support-compat:26.1.0"
     }
-}
-
-task findbugs(type: FindBugs, dependsOn: 'assembleDebug') {
-
-    description 'Run findbugs'
-    group 'verification'
-
-    classes = fileTree('build/intermediates/classes/debug/')
-    source = fileTree('src/main/java')
-    classpath = files()
-
-    effort = 'max'
-
-    excludeFilter = file("./config/findbugs/exclude.xml")
-
-    reports {
-        xml.enabled = false
-        html.enabled = true
-    }
-}
+}