Don't use `ethereum.send`, use `ethereum.request`

[MicahZoltu]

Describe the bug If you use a new version of MetaMask, you'll see the following warning in the browser console:

MetaMask: 'ethereum.send(...)' is deprecated and may be removed in the future. Please use 'ethereum.sendAsync(...)' or 'ethereum.request(...)' instead.

To Reproduce Steps to reproduce the behavior:

1. Install Firefox.
2. Install MetaMask.
3. Sign-in to MetaMask.
4. Open Augur UI.
5. Notice warning in console.

Expected behavior No warnings about using deprecated methods.

Desktop (please complete the following information):

• OS: Windows
• Browser: Firefox
• Version: 78.0.2

Additional context I suspect that this is coming from whatever library you are using, and hopefully the fix is as simple as updating the library. I believe that ethers has been updated to use ethereum.sendAsync or ethereum.request, so hopefully just updating to latest will fix this issue.

[Chwy5]

@andrewdamelio please take a look at this