Update readme, remove truffle and ganache instructions (#2398)

* Update readme, remove truffle and ganache instructions

* Rm exchange rate constants

* Move env vars info higher

readme.md

@@ -21,13 +21,20 @@ These instructions will get you a copy of the project up and running on your loc
 
 ### Prerequisites
 
-What you need to install globally:
+We use [yarn](https://yarnpkg.com) in our infrastructure, so we decided to go with yarn in the README.
+Please install yarn globally if you haven't already.
 
+### Environment variables
+The app grabs environment variables from the `.env` file. Copy our template to your own local file:
 ```
-yarn global add truffle ganache-cli
+cp .env.example .env
 ```
 
-We use [yarn](https://yarnpkg.com) in our infrastructure, so we decided to go with yarn in the README
+To execute transactions, you'll need to create an [Infura](https://infura.io) project and set the project ID in the `.env` you've just created:
+```
+REACT_APP_INFURA_TOKEN=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
+```
+Once done, you'll need to restart the app if it's already running.
 
 ### Installing and running
 
@@ -46,18 +53,6 @@ If you prefer using the Mainnet ones:
 yarn start-mainnet
 ```
 
-### Environment variables
-The app grabs environment variables from the `.env` file. Copy our template to your own local file:
-```
-cp .env.example .env
-```
-
-To execute transactions, you'll need to create an [Infura](https://infura.io) project and set the project ID in the `.env` you've just created:
-```
-REACT_APP_INFURA_TOKEN=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
-```
-Once done, you'll need to restart the app.
-
 ### Building
 For Rinkeby:
 ```
@@ -72,31 +67,7 @@ yarn build-mainnet
 
 ## Running the tests
 
-1. Run `transaction-history-service`
-```
-git clone https://github.com/gnosis/safe-transaction-service.git
-cd safe-transaction-service
-git checkout develop
-docker-compose build
-# it comes enabled by default in docker-compose
-sudo service postgresql stop
-docker-compose up -d
-```
-Check that the service is running at https://localhost:8000
-
-2. Migrate Safe Contracts:
-```
-git clone https://github.com/gnosis/safe-contracts.git
-cd safe-contracts
-yarn
-npx truffle migrate
-```
-3. Migrate Token Contracts for the tests:
-Inside `safe-react` directory
-```
-npx truffle migrate
-```
-4. Run the tests:
+To run the tests:
 ```
 yarn test
 ```
@@ -105,7 +76,6 @@ yarn test
 
 ESLint will be run automatically before you commit. To run it manually:
 
-
 ```
 yarn lint:fix
 ```
@@ -134,8 +104,6 @@ We prepare a new release every sprint. Sprints are two weeks long.
 
 ## Built With
 
-* [Truffle React Box](https://github.com/truffle-box/react-box) - The web framework used
-* [Ganache](https://github.com/trufflesuite/ganache-cli) - Fast Ethereum RPC client
 * [React](https://reactjs.org/) - A JS library for building user interfaces
 * [Material UI 4.X](https://material-ui.com/) - React components that implement Google's Material Design
 * [redux, immutable, reselect, final-form](https://redux.js.org/) - React ecosystem libraries

src/utils/constants.ts

@@ -24,8 +24,6 @@ export const COLLECTIBLES_SOURCE = process.env.REACT_APP_COLLECTIBLES_SOURCE ||
 export const TIMEOUT = process.env.NODE_ENV === 'test' ? 1500 : 5000
 export const ETHERSCAN_API_KEY = process.env.REACT_APP_ETHERSCAN_API_KEY
 export const ETHGASSTATION_API_KEY = process.env.REACT_APP_ETHGASSTATION_API_KEY
-export const EXCHANGE_RATE_URL = 'https://api.exchangeratesapi.io/latest'
-export const EXCHANGE_RATE_URL_FALLBACK = 'https://api.coinbase.com/v2/exchange-rates'
 export const SAFE_APPS_LIST_URL =
   process.env.REACT_APP_SAFE_APPS_LIST_URL ||
   'https://raw.githubusercontent.com/gnosis/safe-apps-list/main/public/gnosis-default.applist.json'

truffle.js

@@ -1,16 +0,0 @@
-module.exports = {
-  migrations_directory: './migrations',
-  networks: {
-    development: {
-      host: 'localhost',
-      port: 8545,
-      network_id: '*', //* Match any network id
-    },
-  },
-  solc: {
-    optimizer: {
-      enabled: true,
-      runs: 500,
-    },
-  },
-}