Added getVersion() API call.

src/main/java/org/gitlab4j/api/GitLabApi.java

@@ -2,7 +2,12 @@ package org.gitlab4j.api;
 
 import java.util.Map;
 
+import javax.ws.rs.core.MultivaluedMap;
+import javax.ws.rs.core.Response;
+
+import org.gitlab4j.api.models.Group;
 import org.gitlab4j.api.models.Session;
+import org.gitlab4j.api.models.Version;
 
 /**
  * This class is provides a simplified interface to a GitLab API server, and divides the API up into
@@ -233,6 +238,24 @@ public class GitLabApi {
     GitLabApiClient getApiClient() {
         return (apiClient);
     }
+    
+    /**
+     * Get the version info for the GitLab server using the GitLab Version API.
+     * 
+     * @return the version info for the GitLab server
+     * @throws GitLabApiException if any exception occurs
+     */
+    public Version getVersion() throws GitLabApiException {
+
+        class VersionApi extends AbstractApi {
+            VersionApi(GitLabApi gitlabApi) {
+                super(gitlabApi);
+            }
+        }
+
+        Response response = new VersionApi(this).get(Response.Status.OK, null, "version");
+        return (response.readEntity(Version.class));
+    }
 
     /**
      * Gets the CommitsApi instance owned by this GitLabApi instance. The CommitsApi is used

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

@@ -15,6 +15,7 @@ import java.util.List;
 import org.gitlab4j.api.GitLabApi.ApiVersion;
 import org.gitlab4j.api.models.Branch;
 import org.gitlab4j.api.models.Project;
+import org.gitlab4j.api.models.Version;
 import org.junit.AfterClass;
 import org.junit.Before;
 import org.junit.BeforeClass;
@@ -104,6 +105,15 @@ public class TestGitLabApi {
         assumeTrue(gitLabApi != null);
     }
 
+    @Test
+    public void testGetVersion() throws GitLabApiException {
+        Version version = gitLabApi.getVersion();
+        assertNotNull(version);
+        System.out.format("version=%s, revision=%s%n", version.getVersion(), version.getRevision());
+        assertNotNull(version.getVersion());
+        assertNotNull(version.getRevision());
+    }
+
     @Test
     public void testProjects() throws GitLabApiException {
         List<Project> projects = gitLabApi.getProjectApi().getProjects();