Remove encoding option from input parser.

Refs #12.
Add skipinitialspace to outcsv.

This is just to unifies incsv/outcsv options. The alternative would be
to remove skipinitialspace from both.

Refs #12.
Add --ignore-case switch to grep
Implement the `csv -H` option properly
Fix bug with no header html output
Merge pull request #68 from andylolz/12-csv-args

Remove encoding option from csv parser; unify input/output csv options
Merge pull request #70 from andylolz/31-grep-opts

Add --ignore-case switch to grep
Merge pull request #72 from andylolz/35-header-rows

Implement the `csv -H` option properly
Update and standardise all doc pages.