Readme updated

README.md

@@ -1,3 +1,57 @@
 # GoWatch
 
-GoWatch is a CLI utility to check a program output and send a signal in case a pattern is recognized.
+GoWatch is a CLI utility to check a program output (using **regex**) and send a signal if a pattern is recognized.
+
+## Installation
+
+To install GoWatch, you have two options:
+### Precompiled binaries
+
+Download it from the [releases page](https://github.com/cheina97/gowatch/releases/download/latest)
+
+### Build from source
+
+```bash
+git clone https://github.com/cheina97/gowatch.git
+make build
+chmod +x gowatch
+```
+
+Optionally, you can move the binary to a directory in your PATH, for example:
+
+```bash
+sudo mv gowatch /usr/local/bin/gowatch
+```
+
+## Usage
+
+**GoWatch** allows you to check the output of a program using **regex** and send a **signal** when a pattern is recognized.
+
+First of all create a **json** file containing some **regex** patterns to check:
+
+```json
+["regex1", "regex2", "regex3"]
+```
+
+Then run **gowatch** and pass the program you want to check as argument:
+
+```bash
+gowatch -f patterns.json command arg1 arg2
+```
+
+## Options
+
+These flags can be used to customize the behavior of **gowatch**:
+
+```bash
+Usage of ./gowatch:
+  -c int
+        Number of concurrent workers (default 4)
+  -d    Enable debug mode
+  -f string
+        Path to the json file which contains the patterns to check
+  -q    Disable output
+  -s value
+        Signal to send to the command's process when its output matches a pattern (default killed)
+  -v    Show version
+```