add getProject method via namespace and project name (#191)

src/main/java/org/gitlab/api/GitlabAPI.java

 package org.gitlab.api;
 
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.Serializable;
-import java.io.UnsupportedEncodingException;
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.gitlab.api.http.GitlabHTTPRequestor;
+import org.gitlab.api.http.Query;
+import org.gitlab.api.models.*;
+
+import java.io.*;
 import java.net.URL;
 import java.net.URLEncoder;
 import java.text.SimpleDateFormat;
@@ -13,20 +15,6 @@ import java.util.Arrays;
 import java.util.Date;
 import java.util.List;
 
-import org.gitlab.api.http.GitlabHTTPRequestor;
-import org.gitlab.api.http.Query;
-import org.gitlab.api.models.*;
-
-import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.ObjectMapper;
-
-import org.gitlab.api.http.GitlabHTTPRequestor;
-import org.gitlab.api.http.Query;
-import org.gitlab.api.models.*;
-
-import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.ObjectMapper;
-
 
 /**
  * Gitlab API Wrapper class
@@ -581,6 +569,14 @@ public class GitlabAPI {
         return retrieve().to(tailUrl, GitlabProject.class);
     }
 
+    /**
+     * use namespace & project name to get project
+     */
+    public GitlabProject getProject(String namespace, String projectName) throws IOException{
+        String tailUrl = GitlabProject.URL + "/" + namespace + "%2F" + projectName;
+        return retrieve().to(tailUrl, GitlabProject.class);
+    }
+
     /**
      *
      * Get a list of projects accessible by the authenticated user.