Added the sphinx documentation.
Added the sphinx documentation.

sampadsaha5/sympy,yashsharan/sympy,kaushik94/sympy,sampadsaha5/sympy,aktech/sympy,kaushik94/sympy,souravsingh/sympy,drufat/sympy,yashsharan/sympy,aktech/sympy,souravsingh/sympy,skidzo/sympy,drufat/sympy,postvakje/sympy,jaimahajan1997/sympy,yashsharan/sympy,drufat/sympy,jaimahajan1997/sympy,madan96/sympy,skidzo/sympy,sampadsaha5/sympy,chaffra/sympy,souravsingh/sympy,jaimahajan1997/sympy,madan96/sympy,postvakje/sympy,madan96/sympy,aktech/sympy,chaffra/sympy,kaushik94/sympy,chaffra/sympy,postvakje/sympy,skidzo/sympy