Merge pull request #49 from nkubala/installation

update installation instructions in README

Author: aaron-prindle

README.md

@@ -19,18 +19,18 @@ This tool can help you as a developer better understand what is changing within
 
 ### macOS
 ```shell
-curl -LO container-diff https://storage.googleapis.com/container-diff/v0.2.0/container-diff-amd64-darwin
+curl -LO https://storage.googleapis.com/container-diff/v0.2.0/container-diff-amd64-darwin && chmod +x container-diff-amd64-darwin && sudo mv container-diff-amd64-darwin /usr/local/bin/container-diff
 ```
 
 ### Linux
 ```shell
-curl -LO https://storage.googleapis.com/container-diff/v0.2.0/container-diff-amd64-linux && chmod +x container-diff-amd64-linux && sudo mv container-diff-amd64-linux /usr/local/bin/
+curl -LO https://storage.googleapis.com/container-diff/v0.2.0/container-diff-amd64-linux && chmod +x container-diff-amd64-linux && sudo mv container-diff-amd64-linux /usr/local/bin/container-diff
 ```
 
 OR, if you want to avoid using sudo:
 
 ```shell
-curl -LO https://storage.googleapis.com/container-diff/v0.2.0/container-diff-linux-amd64 && chmod +x container-diff-linux-amd64 && mkdir $HOME/bin && export PATH=$PATH:$HOME/bin && mv container-diff-linux-amd64 $HOME/bin
+curl -LO https://storage.googleapis.com/container-diff/v0.2.0/container-diff-linux-amd64 && chmod +x container-diff-linux-amd64 && mkdir $HOME/bin && export PATH=$PATH:$HOME/bin && mv container-diff-linux-amd64 $HOME/bin/container-diff
 ```
 
 ### Windows