doc: adjusted packages install (#23)

README.md

@@ -67,8 +67,8 @@ Let's create our first project from scratch using Boneless!
 ### Installing dependencies
 First, we need to install the binary of Service Weaver, Go Migrate, SQLC, and Boneless. Even so, I suggest you read the documentation of all of them on your official websites.
 ```sh
-$ brew install golang-migrate
-$ brew install sqlc
+$ go install -tags 'mysql sqlite3' github.com/golang-migrate/migrate/v4/cmd/migrate@latest
+$ go install github.com/sqlc-dev/sqlc/cmd/sqlc@latest
 $ go install github.com/ServiceWeaver/weaver/cmd/weaver@latest
 $ go install github.com/renanbastos93/boneless/cmd/boneless@latest
 ```