Updated build tools, compile and target sdk version.

Author: DenBond7

gradle.properties

@@ -18,9 +18,9 @@
 # org.gradle.parallel=true
 APP_VERSION_CODE=8
 APP_VERSION_NAME=0.0.8
-BUILD_TOOLS_VERSION=25.0.3
-COMPILE_SDK_VERSION=25
-TARGET_SDK_VERSION=25
+BUILD_TOOLS_VERSION=26.0.2
+COMPILE_SDK_VERSION=26
+TARGET_SDK_VERSION=26
 MIN_SDK_VERSION=19
 JAVA_SOURCE_COMPATIBILITY=1.7
 REQUIRED_GRADLE_VERSION=2.14.1