Merge pull request #2787 from square/jakew/ship-rules/2018-06-11

Ship R8/ProGuard rules in the jar.

README.md

@@ -27,22 +27,13 @@ Snapshots of the development version are available in [Sonatype's `snapshots` re
 Retrofit requires at minimum Java 7 or Android 2.3.
 
 
-ProGuard
---------
+R8 / ProGuard
+-------------
 
-If you are using ProGuard you need to add the following options:
-```
-# Retain generic type information for use by reflection by converters and adapters.
--keepattributes Signature
-# Retain service method parameters.
--keepclassmembers,allowshrinking,allowobfuscation interface * {
-    @retrofit2.http.* <methods>;
-}
-# Ignore annotation used for build tooling.
--dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
-```
+If you are using R8 or ProGuard add the options from
+[this file](https://github.com/square/retrofit/blob/master/retrofit/src/main/resources/META-INF/proguard/rules.pro).
 
-You might also need rules for OkHttp and Okio which are dependencies.
+You might also need rules for OkHttp and Okio which are dependencies of this library.
 
 
 License

retrofit/src/main/resources/META-INF/proguard/rules.pro

+# Retain generic type information for use by reflection by converters and adapters.
+-keepattributes Signature
+
+# Retain service method parameters.
+-keepclassmembers,allowshrinking,allowobfuscation interface * {
+    @retrofit2.http.* <methods>;
+}
+
+# Ignore annotation used for build tooling.
+-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement

website/index.html

@@ -173,19 +173,9 @@ implementation 'com.squareup.retrofit2:retrofit:<span class="version pln"><em>(i
 </pre>
               <p>Retrofit requires at minimum Java 7 or Android 2.3.</p>
 
-              <h4>ProGuard</h4>
-              <p>If you are using ProGuard in your project add the following lines to your configuration:</p>
-              <pre class="prettyprint">
-# Retain generic type information for use by reflection by converters and adapters.
--keepattributes Signature
-# Retain service method parameters.
--keepclassmembernames,allowobfuscation interface * {
-    @retrofit2.http.* <methods>;
-}
-# Ignore annotation used for build tooling.
--dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
-</pre>
-            <p>Retrofit uses <a href="https://github.com/square/okio">Okio</a> under the hood, so you may want to look at its <a href="https://github.com/square/okio#proguard">ProGuard rules</a> as well.</p>
+              <h4>R8 / ProGuard</h4>
+              <p>If you are using R8 or ProGuard add the options from <a href="https://github.com/square/retrofit/blob/master/retrofit/src/main/resources/META-INF/proguard/rules.pro">this file</a>.</p>
+              <p>You might also need rules for OkHttp and Okio which are dependencies of this library.</p>
             </section>
 
             <section id="contributing">