Option to remove BOM from start of file

[danspam]

Similar to the command line version of handlebarsjs, added the option to remove the BOM character from the template before it is compiled. This stops the  character appearing in the html causing unwanted spaces when your text editor saves the file as UTF8 with Signature or similar.

var hbsfy = require("hbsfy").configure({
  bom: true // or b: true
});

Fixes #18 and includes test.

[danspam]

@kirbysayshi you seem to have write access now. Any chance of getting this pr merged?

[kirbysayshi]

Is there ever a reason to include a BOM? I'm wondering if it's worthwhile to just always test for it and strip it if found, vs an explicit option.

[danspam]

I added it as an explicit option as this is how it is done on the handlebars precompiler. However, I am with you on this one.. why would you ever want to keep it?!

[kirbysayshi]

I'm going to merge this, and remove the optional part of it. I can't imagine ever wanting a BOM, might as well just strip it if found.

[kirbysayshi]

@danspam this is published as v2.4.1! I reworked your change to always strip and used a regex instead of the unprintable character. Thanks for the submission!