Support other EVM chains - Polygon/matic

[n00b21337]

Wondering are there any plans to add other EVM networks to the JS library. So far there is only

    Network["Main"] = "main";
    Network["Rinkeby"] = "rinkeby";

Would like to have Polygon/Matic also added to list Network["Matic"] = "matic"; And supported through the library.