Add more words to dictionary.
Merge branch 'master' of github.com:jonhiggs/vimfiles

Conflicts:
	dict/custom-dictionary.utf-8.add
	dict/custom-dictionary.utf-8.add.spl
Ignore *.spl files.
Delete duplicate word.
Delete the spl file.
Regenerate .spl file on startup.
It's a bit slow to update the spelling file every time.