title: support:CardView minimum SDK?
body: <p>I'm trying to add CardView support into my app for devices lower than Android L by adding the line:</p>
  
  <pre><code>compile 'com.android.support:cardview-v7:21.+'
  </code></pre>
  
  <p>I've then added compileSdkVersion and targetSdkVersion to 'android-L'</p>
  
  <p>Now, unless I am mistaken, I thought that this would have built on my Nexus 5 in 4.4.4, however I get the error</p>
  
  <blockquote>
    <p>Failure [INSTALL_FAILED_OLDER_SDK]</p>
  </blockquote>
  
  <p>Am I missing something or misunderstood this?  Full build.gradle below:</p>
  
  <p>apply plugin: 'com.android.application'</p>
  
  <pre><code>android {
      compileSdkVersion 'android-L'
      buildToolsVersion "20.0.0"
  
      defaultConfig {
          applicationId "com.gh.app"
          minSdkVersion 15
          targetSdkVersion 'android-L'
          versionCode 1
          versionName "1.0"
      }
      buildTypes {
          release {
              runProguard false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
  }
  
  dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      wearApp project(':wear')
      compile 'com.google.android.gms:play-services-wearable:+'
      compile 'com.android.support:support-v4:20.0+'
      compile files('libs/TalkClient.jar')
      compile 'com.android.support:cardview-v7:21.+'
  }
  </code></pre>