Add :attr_delims option to Slim::Parser
Merge pull request #434 from sigerello/fe-attr-delims-option

Add :attr_delims option
changes

[ci skip]
readme - remove section about upgrading

[ci skip]
update readme

[ci skip]
update readme
readme typo

[ci skip]
minor parser cleanup
clarify readme for #446
Update README.md

This example shows you how a basic Slim file looks
OR
This example shows you what a basic Slim file looks like
Merge pull request #448 from afhole/patch-1

Update README.md
Merge remote-tracking branch 'upstream/master' into README_ja

Conflicts:
	README.md