IDE support

[magwas]

I have figured out that there is support for eclipse from a closed issue: #58
It would be nice to mention in the README.
Also it would be nice if it would work:

$ ./gradlew --debug --stacktrace eclipse 2>&1 |tee /tmp/foo
22:02:55.793 [ERROR] [org.gradle.BuildExceptionReporter] 
22:02:55.817 [ERROR] [org.gradle.BuildExceptionReporter] FAILURE: Build failed with an exception.
22:02:55.819 [ERROR] [org.gradle.BuildExceptionReporter] 
22:02:55.820 [ERROR] [org.gradle.BuildExceptionReporter] * What went wrong:
22:02:55.820 [ERROR] [org.gradle.BuildExceptionReporter] Could not determine java version from '11.0.3'.
22:02:55.821 [ERROR] [org.gradle.BuildExceptionReporter] 
22:02:55.821 [ERROR] [org.gradle.BuildExceptionReporter] * Exception is:
22:02:55.822 [ERROR] [org.gradle.BuildExceptionReporter] java.lang.IllegalArgumentException: Could not determine java version from '11.0.3'.
22:02:55.823 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.api.JavaVersion.toVersion(JavaVersion.java:64)
22:02:55.823 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.api.JavaVersion.current(JavaVersion.java:73)
22:02:55.823 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:32)
22:02:55.824 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)
22:02:55.824 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:206)
22:02:55.824 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:169)
22:02:55.825 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
22:02:55.825 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
22:02:55.825 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.launcher.Main.doAction(Main.java:33)
22:02:55.825 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
22:02:55.826 [ERROR] [org.gradle.BuildExceptionReporter] 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
22:02:55.826 [ERROR] [org.gradle.BuildExceptionReporter] 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
22:02:55.826 [ERROR] [org.gradle.BuildExceptionReporter] 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
22:02:55.827 [ERROR] [org.gradle.BuildExceptionReporter] 	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
22:02:55.827 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:54)
22:02:55.827 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:35)
22:02:55.827 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.launcher.GradleMain.main(GradleMain.java:23)
22:02:55.828 [ERROR] [org.gradle.BuildExceptionReporter] 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
22:02:55.828 [ERROR] [org.gradle.BuildExceptionReporter] 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
22:02:55.828 [ERROR] [org.gradle.BuildExceptionReporter] 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
22:02:55.828 [ERROR] [org.gradle.BuildExceptionReporter] 	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
22:02:55.829 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:30)
22:02:55.829 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:129)
22:02:55.829 [ERROR] [org.gradle.BuildExceptionReporter] 	at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
22:02:55.829 [ERROR] [org.gradle.BuildExceptionReporter]