chore: clean up .gitignore by removing yarn debug logs and update installation command in README

Author: shayc

.gitignore

@@ -1,4 +1,3 @@
-
 # See https://help.github.com/ignore-files/ for more about ignoring files.
 
 # dependencies
@@ -17,5 +16,3 @@ dist
 .env.production.local
 
 npm-debug.log*
-yarn-debug.log*
-yarn-error.log*

README.md

@@ -5,7 +5,7 @@
 ## Install
 
 ```bash
-npm install --save react-scannable
+npm install react-scannable
 ```
 
 ## Usage