title: Build maven project with using buck
body: <p>I have a problem with BUCK build tool from facebook, when I test it with my old maven project.</p>
  
  <p>I have sth like this :</p>
  
  <pre><code>-rw-r--r--  1 piotr users  259 10-03 19:59 BUCK
  -rw-r--r--  1 piotr users  235 10-03 19:56 .buckconfig
  drwxr-xr-x  5 piotr users 4096 10-03 19:58 buck-out/
  -rw-r--r--  1 piotr users  267 10-03 19:59 BUILD
  drwxr-xr-x  2 piotr users 4096 08-11 16:53 configs/
  -rw-r--r--  1 piotr users 3988 09-04 11:55 pom.xml
  drwxr-xr-x  3 piotr users 4096 09-04 17:18 src/
  </code></pre>
  
  <p>cat .buckconfig </p>
  
  <pre><code>[java]
      src_roots = /src/main/java/, /src/main/resources/
      source_level = 8
      target_level = 8
  
  [download]
      maven_repo = http://repo.maven.apache.org/maven2/
      in_build = true
  
  [project]
      ignore = .git, target
  </code></pre>
  
  <p>cat BUILD </p>
  
  <pre><code>java_binary(
      name = "app",
      main_class = "com.example.daemon.Server",
      runtime_deps = [":main"],
  )
  
  java_library(
      name = "main",
      srcs = glob(["src/main/java/**/*.java"]),
      resources = glob(["src/main/resources/**"]),
      deps = ["@gson//jar"],
  </code></pre>
  
  <p>cat BUCK </p>
  
  <pre><code>java_binary(
      name = "app",
      main_class = "com.example.daemon.Server",
      deps = [":main"],
  )
  
  java_library(
      name = "main",
      srcs = glob(["src/main/java/**/*.java"]),
      resources = glob(["src/main/resources/**"]),
      deps = ["//dep:gson"],
  )
  </code></pre>
  
  <p>and i try command :</p>
  
  <pre><code>buck targets
  Not using buckd because watchman isn't installed.
  [+] PROCESSING BUCK FILES...0,0s [100%]
  BUILD FAILED: Couldn't get dependency '//dep:gson' of target '//:main':
  No build file at dep/BUCK when resolving target //dep:gson.
   ✘  ~/p/replication-daemon   :  ➦ 16ae702  ±  
  </code></pre>
  
  <p>How I can add maven repositories to buck project? (like in gson in this case) I'm looking for any examples, but I don't find anything... </p>
  
  <p>I will be gratefull for any answers...</p>