Rename MainRunner to MainCodeRunner

This is for clarity and consistency.

Author: ctrueden

…ava/org/scijava/main/run/MainRunner.java …org/scijava/main/run/MainCodeRunner.javasrc/main/java/org/scijava/main/run/MainRunner.java renamed to src/main/java/org/scijava/main/run/MainCodeRunner.java src/main/java/org/scijava/main/run/MainRunner.java renamed to src/main/java/org/scijava/main/run/MainCodeRunner.java

@@ -47,7 +47,7 @@
  * @author Curtis Rueden
  */
 @Plugin(type = CodeRunner.class, priority = Priority.LOW_PRIORITY)
-public class MainRunner extends AbstractCodeRunner {
+public class MainCodeRunner extends AbstractCodeRunner {
 
 	@Parameter(required = false)
 	private LogService log;