Merge pull request #54 from wuwen5/compiler-Argument

fixes JAVASSIST-245
<source> and <target> is 1.6, but <compilerArgument> "-parameters" in1.8

pom.xml

@@ -147,7 +147,7 @@
           <target>1.6</target>
           <testSource>1.8</testSource>
           <testTarget>1.8</testTarget>
-          <compilerArgument>-parameters</compilerArgument>
+          <testCompilerArgument>-parameters</testCompilerArgument>
         </configuration>
       </plugin>
       <plugin>