hotfix: More specific help argument.

Author: w-martin

util/src/main/java/diffr/util/ArgumentsProcessor.java

@@ -18,7 +18,8 @@ public class ArgumentsProcessor {
      */
     public static boolean containsHelpArgument(final String... args) {
         for (final String s : args) {
-            if (s.toLowerCase().contains("help")) {
+            if (s.equalsIgnoreCase("--help")
+                    || s.equalsIgnoreCase("-help")) {
                 return true;
             }
         }

util/src/test/java/diffr/util/ArgumentsProcessorTest.java

@@ -21,8 +21,8 @@ public class ArgumentsProcessorTest {
      */
     @Test
     public void testContainsHelpArgument() {
-        final List<String> valid = Lists.newArrayList("-hElp!!----", "me", "please");
-        final List<String> inValid = Lists.newArrayList("hlp", "me", "please");
+        final List<String> valid = Lists.newArrayList("--hElp", "me", "please");
+        final List<String> inValid = Lists.newArrayList("hl-p", "me", "please");
         assertThat(ArgumentsProcessor.containsHelpArgument(valid.toArray(new String[0])), is(true));
         assertThat(ArgumentsProcessor.containsHelpArgument(inValid.toArray(new String[0])), is(false));
     }