new bspline_vector_space.py. class for bspline
added test bspline file
base version of the constructor and test running properly
Added compute_n_dofs and compute_mults
Added tests for compute_n_dofs and compute_mults
base constructor and test working
Added cell_span method with test
Fix cell_span in a more pythonic way ;)
Added basis, plot_basis_functions, map_basis_cell, find_span methods and a shared library in utilities.
Trying to set properly the installation of the external librory
Cleaning the filesystem
Added bash script for the external library
fix setup.sh
verbose mode in setup.sh
Derivative in bspline_vector_space.py, added more tests, cleaned .gitignore
Merge pull request #24 from mtezzele/bspline

BsplineVectorSpace interface and test.
Added possibility to use multicomponent vectors.