fix: disable tslint max-file-line-count...

before, tslint was saying "ERROR:
/home/gene/0x-monorepo/packages/types/src/index.ts[598, 2]: This file
has 599 lines, which exceeds the maximum of 500 lines allowed. Consider
breaking this file up into smaller parts."

https://github.com/0xProject/0x-monorepo/pull/1004#issuecomment-424704651
https://github.com/0xProject/0x-monorepo/pull/1004

packages/types/src/index.ts

@@ -1,3 +1,5 @@
+// tslint:disable:max-file-line-count
+
 import { BigNumber } from 'bignumber.js';
 import { ContractAbi } from 'ethereum-types';