Incorrect SuperchainERC20 address in README (at least when building locally)

[karlfloersch]

Bug Description
The README says the predeployed SuperERC20 address is 0x61a6eF395d217eD7C79e1B84880167a417796172 but when I investigated it seemed to be getting deployed to 0xA301B4dbc64c5BDA1f128186B1D084246E964F13

Steps to Reproduce

Building and running supersim

1. git clone ...supersim...
2. just generate-genesis
3. just build-go
4. just build-contracts
5. go build cmd/main.go
6. ./main --interop.autorelay

$ ./main --interop.autorelay 
INFO [09-18|11:15:27.229] starting supersim
INFO [09-18|11:15:27.401] configuring interop contracts
INFO [09-18|11:15:27.401] starting L2ToL2CrossDomainMessenger autorelayer
INFO [09-18|11:15:27.408] supersim is ready
INFO [09-18|11:15:27.413] 
...

Testing Example B

I try to follow the tutorial and run

cast send 0x61a6eF395d217eD7C79e1B84880167a417796172 "mint(address _to, uint256 _amount)"  0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266 1000  --rpc-url http://127.0.0.1:9545 --private-key 0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80

However, there is no code at this contract address. Tested this with:

cast code 0x61a6eF395d217eD7C79e1B84880167a417796172 --rpc-url http://127.0.0.1:9546
0x

But when I use cast send 0xA301B4dbc64c5BDA1f128186B1D084246E964F13 ... the tutorial works as expected.

Expected behavior
Expected the tutorial to work!

Environment Information:

• Operating System: OSX
• Package Version daa397a

Additional context
I would love to have a section in the readme on building & running Supersim locally. It used to have that info but it got removed recently it seems.

---

⚠️ Notice: Issues that do not include the following sections will be subject to closure:

• Bug Description
• Steps to Reproduce
• Environment Information

Please ensure all required sections are filled out accurately to expedite the debugging process and improve issue resolution efficiency.

[jakim929]

thx for reporting! put out a fix here #153 and also an issue for longer term issue. #154

also added back how to build / run