Added code minus tests
Added basic vector tests
Merge branch 'master' of https://github.com/sympy/sympy into basicvector
Added Del operator tests
Merge branch 'master' of https://github.com/sympy/sympy into basicvector
The latest version of livereload does not use the -b option
Move the printing part of the tutorial after the gotchas and basic operations

Pretty printing is not used in the tutorial until after these sections, and
they are more important than printing.
Include simplification
Don't use bullets for the "whet your appetite" section

It just looks bad.
Wording
Note that the printing options are in the settings (which are hidden by default)
Some wording on the "Why SymPy?" section
Spell functions as function() in the printing tutorial
Don't use `` in section titles in the simplification part of the tutorial
Write functions as function() in the simplification section of the tutorial

I have used the convention that Python functions are written as function(),
but SymPy objects (like sin) are not.
Grammar
Rectified bugs, made improvements in __new__ code
to update
Merge branch 'master' of https://github.com/sympy/sympy into basicvector
Added doctests
Merge branch 'master' of https://github.com/sympy/sympy into basicvector