Added derivative.
Fixed little problem in vectorspaces ipynb.
Added gitignore.
Trying to make travis happy.

Added blas.

Fixed typo on .travis

Trying another .travis script.

Yet another attempt to fix.

Yet another attempt to fix. v2.

.travis fixed. Now making it better.
Added Interpolation and Least Squares utilities
Modified least_square.py
Added tests for interpolation and least_square utilities
Modified the tests
Merge pull request #26 from sergiosss/master

Added Interpolation and Least Squares utilities
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