Java 8 compile fix

When using JDK 1.8, the Maven build fails:

    [INFO] -------------------------------------------------------------
    [ERROR] COMPILATION ERROR :
    [INFO] -------------------------------------------------------------
    [ERROR] /C:/projekte/github/swagger-core/modules/swagger-jaxrs/src/main/java/com/wordnik/swagger/jaxrs/Reader.java:[323,3] reference to Parameter is ambiguous
      both class java.lang.reflect.Parameter in java.lang.reflect and interface com.wordnik.swagger.models.parameters.Parameter in com.wordnik.swagger.models.parameters match
    [ERROR] /C:/projekte/github/swagger-core/modules/swagger-jaxrs/src/main/java/com/wordnik/swagger/jaxrs/Reader.java:[311,9] reference to Parameter is ambiguous
      both class java.lang.reflect.Parameter in java.lang.reflect and interface com.wordnik.swagger.models.parameters.Parameter in com.wordnik.swagger.models.parameters match
    [ERROR] /C:/projekte/github/swagger-core/modules/swagger-jaxrs/src/main/java/com/wordnik/swagger/jaxrs/Reader.java:[325,5] reference to Parameter is ambiguous
      both class java.lang.reflect.Parameter in java.lang.reflect and interface com.wordnik.swagger.models.parameters.Parameter in com.wordnik.swagger.models.parameters match
    [INFO] 3 errors
    [INFO] -------------------------------------------------------------
    [INFO] ------------------------------------------------------------------------
    [INFO] Reactor Summary:
    [INFO]
    [INFO] wordnik-swagger-project ........................... SUCCESS [5.665s]
    [INFO] swagger-annotations ............................... SUCCESS [13.779s]
    [INFO] swagger-models .................................... SUCCESS [7.319s]
    [INFO] swagger-core ...................................... SUCCESS [7.943s]
    [INFO] swagger-jaxrs ..................................... FAILURE [2.263s]
    [INFO] swagger-jersey2-jaxrs (Jersey 2.x support) ........ SKIPPED
    [INFO] ------------------------------------------------------------------------
    [INFO] BUILD FAILURE
    [INFO] ------------------------------------------------------------------------
    [INFO] Total time: 38.405s
    [INFO] Finished at: Mon Sep 22 07:57:03 CEST 2014
    [INFO] Final Memory: 25M/65M
    [INFO] ------------------------------------------------------------------------