* Add a new global shalow model with discontinious galerkin method.
  * Due to the validiation, some test cases, such as Williamson(1994)
    and idealized wind-driven circulation within spherical segment are
    performed.

* Extend a grid generation tool to introduce boundaries of ocean.

commit acbfc5b814fb648752e6086b7555c19f602a7733
Author: Yuta Kawai <ykawai@gfd-dennou.org>
Date:   Wed Oct 15 12:07:43 2014 +0900

    * Add a new test case.
      * In this numerical experiment,  wind-driven  circulation is calculated within the spherical segment.
      * Due to the validiation, formulate the linear analystic solution of stommel gyre within the region.
    * Add some programs to generate a grid in which a shoreline is introduced.

commit 5a324acc4e46a43c83824eed85d72dbc4264211f
Author: Yuta Kawai <ykawai@gfd-dennou.org>
Date:   Mon Oct 6 21:34:06 2014 +0900

    * Add a function of conversion between potential temperature and insitu temerature.

commit 482cb4c971d03c9189759e4d87ea27e3bc6c8961
Author: Yuta Kawai <ykawai@gfd-dennou.org>
Date:   Sat Oct 4 18:54:25 2014 +0900

    * Add new functions to create nonuniform spherical grid and introduce the boundaries.

commit a4399feb49afd4ab915d6b22279a8e52a2d4a86d
Author: Yuta Kawai <ykawai@gfd-dennou.org>
Date:   Tue Sep 23 16:54:51 2014 +0900

    * Add a new test case in Williamson(1992), zonal flow over an isolated mountain.

commit 85aad2c7ac7cdaebc19351e275a410e515081a00
Author: Yuta Kawai <ykawai@gfd-dennou.org>
Date:   Mon Sep 22 14:15:09 2014 +0900

    * Extend the implemenion of the global advection test with DG method to global shallow water model.

commit 2afe7e96af779d2a6f87ff763bc7c8747f988cc6
Author: Yuta Kawai <ykawai@gfd-dennou.org>
Date:   Thu Sep 11 01:57:36 2014 +0900

    * Add the global advection test with DG method.

commit 5caa86cc14932a63f1dc57d10e5ce7ec9a25d074
Author: Yuta Kawai <ykawai@gfd-dennou.org>
Date:   Wed Aug 27 10:58:24 2014 +0900

    * Change the structure of directories which contain the base modules associated with FVM in order to
      add new base modules of DGM.

commit ff7dc0b696d8bab0af581e5096fe1f37adfae6cc
Author: Yuta Kawai <ykawai@gfd-dennou.org>
Date:   Mon Aug 25 15:26:51 2014 +0900

    * Modify a ruby script to generate image files.

commit 5e2c1a2d1ad4c59782aa8c22dfb524c493a3fb1d
Author: Yuta Kawai <ykawai@gfd-dennou.org>
Date:   Sat Aug 23 20:37:40 2014 +0900

    * Modify a ruby script to create image files.
    * Remove a bug in diagVar.