created com.mgu.parallel.task which contains examples for task-parallelism, moved the PI estimation via monte carlo to that package

Author: mguenther

src/main/java/com/mgu/parallel/pi/PiBenchmark.java renamed to src/main/java/com/mgu/parallel/task/pi/PiBenchmark.java

@@ -1,4 +1,4 @@
-package com.mgu.parallel.pi;
+package com.mgu.parallel.task.pi;
 
 import org.openjdk.jmh.annotations.BenchmarkMode;
 import org.openjdk.jmh.annotations.GenerateMicroBenchmark;

src/main/java/com/mgu/parallel/pi/PiEstimator.java renamed to src/main/java/com/mgu/parallel/task/pi/PiEstimator.java

@@ -1,4 +1,4 @@
-package com.mgu.parallel.pi;
+package com.mgu.parallel.task.pi;
 
 import com.mgu.parallel.Tuple4;
 

src/main/java/com/mgu/parallel/pi/PiStarter.java renamed to src/main/java/com/mgu/parallel/task/pi/PiStarter.java

@@ -1,4 +1,4 @@
-package com.mgu.parallel.pi;
+package com.mgu.parallel.task.pi;
 
 import org.openjdk.jmh.Main;