Attempts to fix example app.

[coreyphillips]

This PR:

• Attempts to fix the example app. I still receive the following error when running npm run example. I expect it's from this PR @pwltr?:

Documents/testing/beignet ₿ npm run example   

> [email protected] example
> ts-node example

Syncing Wallet...
true
Unable to connect to Electrum server.
Error: Unable to connect to Electrum server.
    at err (/Users/coreyphillips/Documents/testing/beignet/src/utils/result.ts:76:18)
    at Wallet.connectToElectrum (/Users/coreyphillips/Documents/testing/beignet/src/wallet/index.ts:659:14)
    at async Wallet.checkElectrumConnection (/Users/coreyphillips/Documents/testing/beignet/src/wallet/index.ts:891:11)
    at async Wallet.updateAddressIndexes (/Users/coreyphillips/Documents/testing/beignet/src/wallet/index.ts:1425:20)
    at async Wallet.refreshWallet (/Users/coreyphillips/Documents/testing/beignet/src/wallet/index.ts:345:15)
    at async Function.create (/Users/coreyphillips/Documents/testing/beignet/src/wallet/index.ts:272:4)
    at async runExample (/Users/coreyphillips/Documents/testing/beignet/example/index.ts:12:31)
Error: Unable to connect to Electrum server.
    at err (/Users/coreyphillips/Documents/testing/beignet/src/utils/result.ts:76:18)
    at Wallet.updateAddressIndexes (/Users/coreyphillips/Documents/testing/beignet/src/wallet/index.ts:1426:35)
    at async Wallet.refreshWallet (/Users/coreyphillips/Documents/testing/beignet/src/wallet/index.ts:345:15)
    at async Function.create (/Users/coreyphillips/Documents/testing/beignet/src/wallet/index.ts:272:4)
    at async runExample (/Users/coreyphillips/Documents/testing/beignet/example/index.ts:12:31)
Error: Unable to connect to Electrum server.
    at err (/Users/coreyphillips/Documents/testing/beignet/src/utils/result.ts:76:18)
    at Wallet._handleRefreshError (/Users/coreyphillips/Documents/testing/beignet/src/wallet/index.ts:379:45)
    at Wallet.refreshWallet (/Users/coreyphillips/Documents/testing/beignet/src/wallet/index.ts:347:17)
    at async Function.create (/Users/coreyphillips/Documents/testing/beignet/src/wallet/index.ts:272:4)
    at async runExample (/Users/coreyphillips/Documents/testing/beignet/example/index.ts:12:31)
Error: Unable to connect to Electrum server.
    at err (/Users/coreyphillips/Documents/testing/beignet/src/utils/result.ts:76:18)
    at Wallet._handleRefreshError (/Users/coreyphillips/Documents/testing/beignet/src/wallet/index.ts:380:13)
    at Wallet.refreshWallet (/Users/coreyphillips/Documents/testing/beignet/src/wallet/index.ts:347:17)
    at async Function.create (/Users/coreyphillips/Documents/testing/beignet/src/wallet/index.ts:272:4)
    at async runExample (/Users/coreyphillips/Documents/testing/beignet/example/index.ts:12:31)

Balance:  0

Address: bc1q5dlh3hys92e6rq92sqaz2qsrl98wmtvwc6expd
> Connection to Electrum Server lost, reconnecting...

• Creates defaultGapLimitOptions & getDefaultGapLimitOptions.
• Fixes linting errors.

[pwltr]

@coreyphillips The electrum peer for mainnet defined in example/helpers.ts is set to use EProtocol.ssl which is broken in nodejs enviroment after my last PR. I'm trying to fix it but not really sure how atm. Quick fix would be to connect to the peer via TCP instead.

[coreyphillips]

Gotcha. That's not a long-term viable solution though and probably shouldn't have been merged. We'll need to find a solution for it.