message: Make human.off copyright clearer
diff: The human.off point cloud is available at this webpage :
  http://segeval.cs.princeton.edu/
  +LICENSE
  +=======
  +
  +AIM@SHAPE General License for Shapes
  +Applicable terms
  +----------------
  +
  +This is the general AIM@SHAPE license applicable to models in the
  +Shape Repository. It should be noted that each model is a
  +representation of, and is distinct from, a shape, whether physical or
  +imaginary. While the shape may be subject to its own terms, the terms
  +governing the model you are about to download are described herein.
  +
  +For some models, the owners have defined specific licenses. The terms
  +and conditions laid down in these licenses are in addition to the
  +terms prescribed here, and are to be adhered to strictly when using
  +such models.
  +
  +Acknowledgements
  +----------------
  +
  +When including models from the Shape Repository in your website or
  +research work, or when using them for other purposes allowed by the
  +terms described herein, the AIM@SHAPE project and the model owner must
  +be acknowledged as the sources of the models, for example with the
  +phrase, "... model is provided courtesy of <model_owner> by the
  +AIM@SHAPE Shape Repository."
  +
  +Information on <model_owner> is present in the accompanying metadata
  +files and, where present, owner licenses.
  +
  +Metadata
  +--------
  +
  +Each model is accompanied by its metadata file. Please keep this file
  +with the model as it contains important information about the
  +model. Please let us know if you find any errors in the metadata.
  +
  +(Im)proper use
  +--------------
  +
  +Some models in the Shape Repository represent artifacts of religious,
  +cultural and/or historical significance, e.g. the Max Planck
  +model. Such models have been entrusted to the Shape Repository under
  +the hope that they will be used respectfully and
  +conscientiously. Please refrain from conducting experiments on them
  +that may be rash or insensitive to people's feelings. Such experiments
  +include, but are not limited to, morphing, animation, boolean
  +operations, simulations of burning, breaking, exploding and melting.
  +
  Models in the Shape Repository are made freely available for research
  and non-commercial purposes only. Use of these models for commercial
  purposes is permitted only after the express approval of the Shape
  -Repository and the onwner has been obtained. Please contact Princeton
  -University by using the webform on their site in this regard.
  +Repository and the onwner has been obtained. Please contact us using
  +the webform on our site in this regard.
  +
  -Citation
  +CITATION
  +========
  If you use any part of this benchmark, please cite:
  Xiaobai Chen, Aleksey Golovinskiy, and Thomas Funkhouser,
  A Benchmark for 3D Mesh Segmentation
  ACM Transactions on Graphics (Proc. SIGGRAPH), 28(3), 2009.
  +
  +@article{Chen:2009:ABF,
  + author = "Xiaobai Chen and Aleksey Golovinskiy and Thomas Funkhouser",
  + title = "A Benchmark for {3D} Mesh Segmentation",
  + journal = "ACM Transactions on Graphics (Proc. SIGGRAPH)",
  + year = "2009",
  + month = aug,
  + volume = "28",
  + number = "3"
  +}
  \ No newline at end of file
  