Update README.md

Author: hopetoknow

README.md

@@ -20,3 +20,36 @@ The JUnit framework is used to write tests. I also use Make & Makefile for frequ
 
 ### Test Coverage badge from Code Climate
 [![Test Coverage](https://api.codeclimate.com/v1/badges/644d800d4484e158c119/test_coverage)](https://codeclimate.com/github/hopetoknow/java-project-lvl2/test_coverage)
+
+## Install
+```sh
+make
+```
+
+## Run
+```sh
+cd build/install/app/bin/
+./app [-hV] [-f=format] <filepath1> <filepath2> 
+```
+```sh
+  <filepath1>           path to first file
+  <filepath2>           path to second file
+  -f, --format=format   output format [default: stylish] Possible values: stylish, plain, json.
+  -h, --help            Show this help message and exit.
+  -V, --version         Print version information and exit.
+```
+
+## Build
+```sh
+make build
+```
+
+## Run checkstyle
+```sh
+make lint
+```
+
+## Check for Dependency Updates
+```sh
+make check-updates
+```