tox.ini: Install a working IPython on py26 env.
tox.ini: Install a working IPython on py26 env.

bladams/pymssql,bladams/pymssql,ramiro/pymssql,Aloomaio/pymssql,pymssql/pymssql,zerolugithub/pymssql,JimDennis/pymssql,JimDennis/pymssql,Aloomaio/pymssql,klothe/pymssql,zerolugithub/pymssql,ramiro/pymssql,klothe/pymssql,klothe/pymssql,pymssql/pymssql,JimDennis/pymssql,bladams/pymssql,Aloomaio/pymssql,ramiro/pymssql,zerolugithub/pymssql