finish the gify search challenge with unit and ui tests

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild

app/.gitignore

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+/build

app/build.gradle

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+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
+apply plugin: 'kotlin-kapt'
+
+android {
+    compileSdkVersion Android.compileSDK
+    defaultConfig {
+        applicationId Android.applicationId
+        minSdkVersion Android.minSDK
+        targetSdkVersion Android.targetSDK
+        versionCode Android.versionCode
+        versionName  Android.versionName
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    androidExtensions {
+        experimental = true
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation Libs.kotlinStdLib
+    implementation Libs.appCompat
+    implementation Libs.coreExt
+
+
+    // Testing Dependencies
+    testImplementation TestLibs.junit
+    androidTestImplementation TestLibs.espressoCore
+    androidTestImplementation TestLibs.espressoContrib
+    implementation TestLibs.espressoIdlingResource
+    testImplementation TestLibs.archCoreTesting
+    androidTestImplementation TestLibs.testRunner
+    androidTestImplementation TestLibs.rules
+    androidTestImplementation TestLibs.truth
+    androidTestImplementation TestLibs.junitExt
+    testImplementation TestLibs.mockito
+    testImplementation TestLibs.mockHttpServer
+
+
+    //material lib
+    implementation Libs.material
+    // android libs
+    implementation Libs.recyclerview
+    implementation Libs.cardview
+    implementation Libs.constraintLayout
+    //RxJava
+    implementation Libs.rxVersion
+    implementation  Libs.rxAndroid
+    implementation Libs.rxAdapter
+    //Retrofit
+    implementation Libs.retrofit
+    //Gson
+    implementation Libs.gson
+    implementation Libs.gsonConverter
+    //okhttp logging
+    implementation Libs.loggingInterceptor
+    //dagger
+    implementation Libs.dagger
+    kapt Libs.daggerCompiler
+    // live data with view model
+    implementation Libs.viewModel
+    implementation Libs.liveData
+    //glide
+    implementation Libs.glide
+    kapt Libs.glideCompiler
+
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile