add npm & social buttons to homepage

[thatkookooguy]

Add NPM & Social buttons to homepage

Feature

---

a continues of #41

We have a leftover from that issue to create a npm button as well to point to our npm tdd1t page.

Also, while doing that, I suggest we change the buttons to use shields.io which can show the version number and add a logo.

So, here are the two github and npm buttons with shields.io:

• GitHub:
  
• NPM:
  

Should be pretty much copy paste since the style itself is defined by the svgs.

I would suggest both buttons should inhabit a single line with a little margin between them, in the same location as the tdd1t on GitHub button.

---

Want to back this issue? Post a bounty on it! We accept bounties via Bountysource.

[thatkookooguy]

For social buttons, we can also use shields.io
There might be more buttons worth adding, but here's my list:

• Twitter:
  

• GitHub Fork:
  

• Linkedin:
  

These should also inhabit the same line as the last thing in the footer