Fail to sign transaction in Android browser about browser-builds

[arthew]

Addition Comments：
On Andorid mobile, it runs OK in Chrome browser, but others NOT

[arthew]

Root Cause located
in function transaction.sign, new feature of ECMAScript5 used - Object.assign, which had not been supported in other brower.
Suggest set object's attribute directlly hear.

[axic]

@arthew all ethereumjs projects have decided to require ES6 as a minimum. Please include es6-shim in your project. This should be more clearer and addressed in the documentation.

Hope this helps?

[arthew]

Yes, thanks. It runs OK with es6-shim included.