Consolidate all console.log into the @0xproject/utils package

packages/utils/src/index.ts

@@ -4,3 +4,4 @@ export { classUtils } from './class_utils';
 export { intervalUtils } from './interval_utils';
 export { BigNumber } from './configured_bignumber';
 export { AbiDecoder } from './abi_decoder';
+export { logUtils } from './log_utils';

packages/utils/src/log_utils.ts

@@ -0,0 +1,5 @@
+export const logUtils = {
+    log(...args: any[]): void {
+        console.log(...args); // tslint:disable-line:no-console
+    },
+};