Fix save(Iterable)

[usr42]

This PR fixes #143

Before the fix it could happen, that save(iterable) calls save(Object)
in CrudRepositorySupport instead. This resulted in following exception:

com.mmnaseri.utils.spring.data.error.DataOperationExecutionException: Method call resulted in internal error: public java.lang.Object com.mmnaseri.utils.spring.data.repository.CrudRepositorySupport.save(java.lang.Object)
    at com.mmnaseri.utils.spring.data.domain.impl.MethodInvocationDataStoreOperation.execute(MethodInvocationDataStoreOperation.java:42)
    at com.mmnaseri.utils.spring.data.proxy.impl.DataOperationInvocationHandler.invoke(DataOperationInvocationHandler.java:83)
    at com.sun.proxy.$Proxy5.save(Unknown Source)
    at com.mmnaseri.utils.spring.data.dsl.factory.RepositoryFactoryBuilderTest.testSaveIterable(RepositoryFactoryBuilderTest.java:355)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:100)
    at org.testng.internal.Invoker.invokeMethod(Invoker.java:646)
    at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:811)
    at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1129)
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:129)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:112)
    at org.testng.TestRunner.privateRun(TestRunner.java:746)
    at org.testng.TestRunner.run(TestRunner.java:600)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:366)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:361)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:319)
    at org.testng.SuiteRunner.run(SuiteRunner.java:268)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1264)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1189)
    at org.testng.TestNG.runSuites(TestNG.java:1104)
    at org.testng.TestNG.run(TestNG.java:1076)
    at org.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:72)
    at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:123)
Caused by: java.lang.IllegalStateException: Cannot find property `id` on type `class java.util.Arrays$ArrayList`

[coveralls]

Coverage remained the same at 100.0% when pulling bec6ae1 on usr42:fix_save_iterable into 23363d2 on mmnaseri:development.

[usr42]

@mmnaseri Do you need something else for the PR?
Or do you need other support? I'm willing to support maintaining the repo, if you are interested.

[mmnaseri]

@usr42 I added you as a contributor. If you reach out to me at mmnaseri@programmer.net I can tell you about the deployment lifecycle and how I manage it.

Also, I just realized that the TravisCI integration might start to break after GH deprecates its "Services and Integrations" feature in favor of web hooks.