bump android support lib version

Author: biodunalfet

raveandroid/build.gradle

@@ -3,11 +3,11 @@ apply plugin: 'com.github.dcendents.android-maven'
 group = 'com.github.flutterwave'
 
 android {
-    compileSdkVersion 25
+    compileSdkVersion 27
 
     defaultConfig {
         minSdkVersion 15
-        targetSdkVersion 25
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
 
@@ -27,9 +27,9 @@ dependencies {
     androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    implementation 'com.android.support:appcompat-v7:25.4.0'
-    implementation 'com.android.support:design:25.4.0'
-    implementation 'com.android.support:support-v4:25.4.0'
+    implementation 'com.android.support:appcompat-v7:27.1.1'
+    implementation 'com.android.support:design:27.1.1'
+    implementation 'com.android.support:support-v4:27.1.1'
     implementation 'com.squareup.picasso:picasso:2.71828'
     implementation 'com.squareup.retrofit2:retrofit:2.4.0'
     implementation 'com.squareup.retrofit2:converter-gson:2.3.0'