Change CDN url (steemit#451)

* Change CDN url

* Remove version from the CDN url

Merge branch 'master' into release-0.6.4

Release v0.6.3

Merge pull request steemit#211 from steemit/change/use-a-js-file-for-…

…methods

Remove usage of JSON files in steem-js

Merge pull request steemit#209 from steemit/72-http-socket-support

Http socket support

Merge pull request steemit#188 from steemit/release-0.5.19

Release 0.5.19

Release 0.5.19

Release 0.5.18

Merge pull request steemit#179 from steemit/remove-async-await

Remove async await

Merge pull request steemit#177 from steemit/release-0.5.16

Release 0.5.16