Fix documentation for expanding functions according to https://github.com/BlueMountainCapital/Deedle/issues/185#issuecomment-39250612
Fix documentation for expanding functions according to https://github.com/BlueMountainCapital/Deedle/issues/185#issuecomment-39250612

jeyoor/Deedle,filmor/Deedle,BlueMountainCapital/Deedle,AtwooTM/Deedle,AtwooTM/Deedle,buybackoff/Deedle,tpetricek/Deedle,caioproiete/Deedle,buybackoff/Deedle,jeyoor/Deedle,filmor/Deedle,jeyoor/Deedle,filmor/Deedle,buybackoff/Deedle,Dependencies/Deedle,AtwooTM/Deedle,Dependencies/Deedle,caioproiete/Deedle,tpetricek/Deedle,Dependencies/Deedle,BlueMountainCapital/Deedle,tpetricek/Deedle,BlueMountainCapital/Deedle,caioproiete/Deedle