Initial commit of the 1D FV WENO code.

The initial commit has a working code with WENO 3 and WENO 5 tested for the
linear advection equation. At this point the following should be done:

   1. Burgers' equation.
   2. Dirichlet boundary conditions--right now only periodic is available.
Merge branch 'master' of https://github.com/mpclay/Simple1D

Conflicts:
	analysis/Convergence-k-3.dat