Updated input processing readme

corrected some typos
expanded some descriptions
added some missing entries
added new x/+- feed & reset
confirmed all current processes have an entry in readme
grouped all processes as per grouping in the dropdown
Updated processes readme

re-added the omitted comment about using kWh to kWh/d for other purposes.
Updated input processing readme

formatting correction
Merge pull request #19 from pb66/master

Updated input processing readme