title: Error:(18, 0) Could not find method android() for arguments
body: <p>i'am new on android application, i imported an application and i get this error dont know what to do.. someone here can help me! 
  there is my build.gradle file </p>
  
  <pre><code>buildscript {
  repositories {
      jcenter()
  }
  dependencies {
      classpath 'com.android.tools.build:gradle:2.1.3'
  
      // NOTE: Do not place your application dependencies here; they belong
      // in the individual module build.gradle files
  }
  }
   allprojects {
     repositories {
      jcenter()
          }
          }
  
       android {
         compileSdkVersion 23
            buildToolsVersion "23.0.0 rc3"
                  }
  </code></pre>
  
  <p>and there is my app/build.gradle</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
   android {
   compileSdkVersion 22
   buildToolsVersion "23.0.0 rc3"
  
   defaultConfig {
      applicationId "com.codeandcoder.finalguide"
      minSdkVersion 15
      targetSdkVersion 22
      versionCode 2
      versionName "1.1"
     }
     buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
       }
        }
         }
  
       dependencies {
       compile fileTree(dir: 'libs', include: ['*.jar'])
       compile 'com.google.android.gms:play-services:7.5.0'
      compile 'com.android.support:appcompat-v7:22.2.1'
          }
  </code></pre>