[package.json] Use prepare rather than prepublish
[package.json] Use prepare rather than prepublish

mathiasbynens/acorn,mathiasbynens/acorn,ajaxorg/acorn,MarcelGerber/acorn,mysticatea/acorn,ternjs/acorn,marijnh/acorn,TimothyGu/acorn,MarcelGerber/acorn,MarcelGerber/acorn,mathiasbynens/acorn,ajaxorg/acorn,marijnh/acorn,marijnh/acorn,ternjs/acorn,mysticatea/acorn,TimothyGu/acorn,mysticatea/acorn,ternjs/acorn,ajaxorg/acorn,TimothyGu/acorn