fixed firefox-esr-us class name
@ -1,4 +1,4 @@
class FirefoxESR < Cask
class FirefoxEsrUs < Cask
url 'https://download.mozilla.org/?product=firefox-24.4.0esr&os=osx&lang=en-US'
homepage 'http://www.mozilla.org/en-US/firefox/organizations/faq/'
version '24.4.0'