`README.md` uses *Grammer* in headlines rather than *Grammar"

[BrianInglis]

README.md uses Grammer in headlines

1. Grammer
2. Grammer Elements
added in commit
scowl-pre: clean up POS-class handling
rather than Grammar, although it is spelled correctly in the commit log comments.
Is this use of the surname Grammer/suffix grammer (as in Instagrammer, programmer) meant to be facetious, or are they real typos?

[kevina]

Nothing that fancy. I just failed to spell check the headings.