Update README.md (#335)

Author: manuasir

README.md

@@ -49,9 +49,9 @@ brew install ec2-instance-selector
 #### Install w/ Curl for Linux/Mac
 
 ```
-$ curl -Lo ec2-instance-selector https://github.com/aws/amazon-ec2-instance-selector/releases/download/v2.4.1/ec2-instance-selector-`uname | tr '[:upper:]' '[:lower:]'`-amd64 && chmod +x ec2-instance-selector
-$ sudo mv ec2-instance-selector /usr/local/bin/
-$ ec2-instance-selector --version
+curl -Lo ec2-instance-selector https://github.com/aws/amazon-ec2-instance-selector/releases/download/v2.4.1/ec2-instance-selector-`uname | tr '[:upper:]' '[:lower:]'`-amd64 && chmod +x ec2-instance-selector
+sudo mv ec2-instance-selector /usr/local/bin/
+ec2-instance-selector --version
 ```
 
 To execute the CLI, you will need AWS credentials configured. Take a look at the [AWS CLI configuration documentation](https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-configure.html#config-settings-and-precedence) for details on the various ways to configure credentials. An easy way to try out the ec2-instance-selector CLI is to populate the following environment variables with your AWS API credentials.