Update Read.me

[GeoffreyEmery]

Description

Extended the README / documentation
you had limit and it should have been the variable should be slice. Also added a start variable and added that call to the slice funciton

Checklist

• [x ] Code compiles correctly
• [x ] Created tests which fail without the change (if possible)
• [ x] All tests passing
• [ X] Extended the README / documentation, if necessary
• [x ] Added myself / the copyright holder to the AUTHORS file

[coveralls]

Coverage remained the same at 96.199% when pulling 5869585 on GeoffreyEmery:patch-1 into 06e1785 on lapwinglabs:master.

[coveralls]

Coverage remained the same at 96.199% when pulling 6be99bc on GeoffreyEmery:patch-1 into 06e1785 on lapwinglabs:master.

[coveralls]

Coverage remained the same at 96.199% when pulling 6be99bc on GeoffreyEmery:patch-1 into 06e1785 on lapwinglabs:master.

[matthewmueller]

thanks!