Initial commit (#151).

src/test/java/org/gitlab4j/api/TestISO8601.java

+package org.gitlab4j.api;
+
+import static org.junit.Assert.assertEquals;
+
+import java.text.ParseException;
+import java.util.Date;
+
+import org.gitlab4j.api.utils.ISO8601;
+import org.junit.Test;
+
+public class TestISO8601 {
+
+    private static final String SPACEY_GITLAB_DATE = "2018-03-12 10:16:46 +0800";
+    private static final String ISO8601_GITLAB_DATE ="2018-03-12T10:16:46+0800";
+
+    @Test
+    public void testGitlabDateParse() throws ParseException {
+        Date spaceyDate = ISO8601.toDate(SPACEY_GITLAB_DATE);
+        Date gitlabDate = ISO8601.toDate(ISO8601_GITLAB_DATE);
+        assertEquals(spaceyDate, gitlabDate);        
+    }
+}