Using WordPress Class Name Standards to Rename WooCommerce

[WordPress class names](http://make.wordpress.org/core/handbook/coding-standards/php/#naming-conventions) should be capitalized.

> Class names should use capitalized words separated by underscores. Any acronyms should be all upper case.

[Capitalization](http://www.grammarbook.com/punctuation/capital.asp):

> Capitalization is the writing of a word with its first letter in uppercase and the remaining letters in lowercase.