Added own algorithm to compute lattice ideal

of a toric variety. Implementation is based
on the ToricIdeals package by Thomas.
Made a method simpler.
Changed makefileChanged makefile..
Added new manual.css
changed title.
Fixed an error in PackageInfo
Changed status to deposited.
Fixed bugs mentioned by Alexander.
Fixed code from max.
changed examples.
Renamed Divisor -> CreateDivisor

This commit must be removed once gap is patched
to overload attributes with methods.
changed some examples.
Added README.
Changes to some functions.
Added new version number.
Added first todo-list examples.
Added stuff from toric.