You don't really need to, just bookmark this page and you can use it any time with or without internet access. This should work for Google Chrome, Opera, Firefox and Safari. It works best in Chrome, which supports requestFileSystem (other browsers are backed by a less-efficient IndexedDB/WebSQL store).
This was put together by Kevin Kwok (@antimatter15) but is built on Instaview by Pilaf, lzmajs by Gary Linscott, and of course all the content by the Wikipedia community. Special thanks to Guillermo Webster for CSS improvements, and Joel Gustafson for IPFS help.