Replace ganache-cli with hardhat (#154)

Co-authored-by: Jacek Sieka <jacek@status.im>

README.md

@@ -11,13 +11,13 @@ The humble beginnings of a Nim library similar to web3.[js|py]
 
 You can install the developement version of the library through nimble with the following command
 
-```
+```console
 nimble install https://github.com/status-im/nim-web3@#master
 ```
 
 ## Development
 
-You should first run `./simulator.sh` which runs `ganache-cli`
+You should first run `./simulator.sh` which runs `hardhat node`
 
 This creates a local simulated Ethereum network on your local machine and the tests will use this for their E2E processing
 

simulator.sh

@@ -4,9 +4,9 @@
 #       npm i -g nodemon
 
 # Watch all nim files for changes
-# When a file change is detected we will restart ganache-cli
+# When a file change is detected we will restart hardhat node
 # This ensures that our deposit contracts have enough ETH as
 # it seems like some of the tests do not properly initialise
 # their contracts at this time. (state persists across runs)
 
-nodemon --ext '.nim' --watch tests --watch web3 --exec "ganache-cli"
+nodemon --ext '.nim' --watch tests --watch web3 --exec "npx hardhat node"