Update dependencies

build.gradle

@@ -22,12 +22,12 @@ apply plugin: 'com.github.dcendents.android-maven'
 group='com.github.WaylonBrown'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion "25.0.3"
+    compileSdkVersion 27
+    buildToolsVersion "26.0.2"
 
     defaultConfig {
         minSdkVersion 15
-        targetSdkVersion 25
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
 
@@ -47,10 +47,10 @@ dependencies {
     androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    compile 'com.android.support:appcompat-v7:25.3.1'
+    compile 'com.android.support:appcompat-v7:27.0.0'
     testCompile 'junit:junit:4.12'
 
-    compile "android.arch.lifecycle:extensions:1.0.0-alpha1"
+    compile "android.arch.lifecycle:extensions:1.0.0-rc1"
 
     compile 'io.reactivex.rxjava2:rxjava:2.0.2'
 }