Add section for acknowledgement and contributions

README.md

@@ -14,23 +14,28 @@ If you are using bash:
 git clone https://github.com/suyashmahar/pine.git $HOME/pine && echo 'export PATH="$HOME/pine:$PATH"' >> $HOME/.bashrc && source $HOME/.bashrc
 ```
 
+If you are using zsh:
+```shell
+git clone https://github.com/suyashmahar/pine.git $HOME/pine && echo 'export PATH="$HOME/pine:$PATH"' >> $HOME/.zshrc && source $HOME/.zshrc
+```
+
 Usage  
 -----  
 Pine uses extremely simple CLI for managing .gitignore files, to add a new configuration to your .gitignore file just pass the name of configuration as a parameter:
 ```shell
-~ [my-git-rep] $ pine c java kotlin clojure # Install configuration for 'c', 'java', 'kotlin' and 'clojure' 
+[my-git-rep] $ pine c java kotlin clojure # Install configuration for 'c', 'java', 'kotlin' and 'clojure' 
 ```
 
 This would update the .gitignore file present in the same directory with new configurations.
 
 To remove an existing configuration from `.gitignore` use `-r` or `--remove` switch:
 ```shell
-~ [my-git-rep] $ pine -r c java # Removes configuration for 'c' and 'java' from .gitignore file
+[my-git-rep] $ pine -r c java # Removes configuration for 'c' and 'java' from .gitignore file
 ```
 
 Pine uses .gitignore files provided by GitHub, these files are often updated to fix bugs or add a new pattern. To update your local copy of gitignore files use `-u` or `--update` switch:
 ```shell
-~ [my-git-rep] $ pine -u # Updates local repository of GitHub's gitignore files
+[my-git-rep] $ pine -u # Updates local repository of GitHub's gitignore files
 ```
 
 For complete help use `pine --help`.
@@ -39,8 +44,14 @@ Demo
 ----
 [![asciicast](https://asciinema.org/a/JhrS2JOC5Ge5XVLmp3xOIQxZK.png)](https://asciinema.org/a/JhrS2JOC5Ge5XVLmp3xOIQxZK)
 
-Installation
+Uninstallation
 --------------
 Delete `~/pine` directory and remove the line `export PATH="$HOME/pine:$PATH"` from `~/.bashrc`.
 
+Acknowledgment
+--------------
+Pine relies on following components:
+* .gitignore collection by GitHub | [Github repository](https://github.com/github/gitignore)
 
+# Contribution
+Feel free to [file issues](https://github.com/suyashmahar/pine/issues) and submit [pull requests](https://github.com/suyashmahar/pine/pulls) - contributions are welcome.