Replaced with correct JsInterop flag

Author: timeu

README.md

@@ -71,15 +71,14 @@ section:
     </dependency>
 ```
 
-GeneViewer uses [GWT 2.7's][3] new [JSInterop feature][4] and thus it has to be enabled in the GWT compiler args.
+GeneViewer uses [GWT 2.8's][3] new [JSInterop feature][4] and thus it has to be enabled in the GWT compiler args.
 For maven:
 ```xml
 <compilerArgs>
-    <compilerArg>-XjsInteropMode</compilerArg>
-    <compilerArg>JS</compilerArg>
+    <compilerArg>-generateJsInteropExports</compilerArg>
 </compilerArgs>
 ```
-or passing it to the compiler via `-XjsInteropMode`
+or passing it to the compiler via `-generateJsInteropExports`
 
 You can also download the [jar][5] directly or check out the source using git
 from <https://github.com/timeu/geneviewer.git> and build it yourself. Once
@@ -97,8 +96,8 @@ file like this:
 [0]: http://processingjs.org
 [1]: https://github.com/timeu/GeneViewer/blob/master/geneviewer-sample/src/main/resources/sample/client/data/genes.json
 [2]: https://github.com/timeu/GeneViewer/blob/master/geneviewer-sample/src/main/resources/sample/client/data/genes_with_features.json
-[3]: http://www.gwtproject.org/release-notes.html#Release_Notes_2_7_0_RC1
-[4]: https://docs.google.com/document/d/1tir74SB-ZWrs-gQ8w-lOEV3oMY6u6lF2MmNivDEihZ4/edit#
+[3]: http://www.gwtproject.org/release-notes.html#Release_Notes_2_8_0_BETA1
+[4]: https://docs.google.com/document/d/10fmlEYIHcyead_4R1S5wKGs1t2I7Fnp_PaNaa7XTEk0/edit#heading=h.o7amqk9edhb9
 [5]: https://github.com/timeu/GeneViewer/releases
 [6]: http://timeu.github.io/GeneViewer
 [7]: https://github.com/timeu/GeneViewer/tree/master/geneviewer-sample 

pom.xml

@@ -121,17 +121,14 @@
                             <startupUrl>geneviewersample/index.html</startupUrl>
                         </startupUrls>
                         <compilerArgs>
-                            <compilerArg>-XjsInteropMode</compilerArg>
-                            <compilerArg>JS_RC</compilerArg>
+                            <compilerArg>-generateJsInteropExports</compilerArg>
                         </compilerArgs>
                         <devmodeArgs>
-                            <arg>-XjsInteropMode</arg>
-                            <arg>JS_RC</arg>
+                            <devmodeArg>-generateJsInteropExports</devmodeArg>
                             <devmodeArg>-incremental</devmodeArg>
                         </devmodeArgs>
                         <codeserverArgs>
-                            <arg>-XjsInteropMode</arg>
-                            <arg>JS_RC</arg>
+                            <arg>-generateJsInteropExports</arg>
                             <arg>-incremental</arg>
                         </codeserverArgs>
                         <moduleName>${gwt.module}</moduleName>