some security measures (for people not ready to trust their CDNs)

[Mithgol]

This addition to README provides yet another example of CDN usage that ensures maximum security (but references a specific version of IPFS API).

The following minor changes are also introduced:

• “the Browser” → “a web browser”
• “through <script> tag” → “from CDN” (a necessary clarification because browserified versions, mentioned above it, are also likely to be used through <script>)
• the CORS-related problem (below) is specifically mentioned as affecting CDN-based IPFS API as well as browserified

[victorb]

Looks good, we should merge this @diasdavid

[daviddias]

Thank you :)