feat: Create Makefile and Update README (#41)

* create makefile

* update cfg section

Makefile

@@ -0,0 +1,62 @@
+# Makefile for tlin
+
+# Go parameters
+GOCMD=go
+GOBUILD=$(GOCMD) build
+GOTEST=$(GOCMD) test
+GOCLEAN=$(GOCMD) clean
+GOGET=$(GOCMD) get
+BINARY_NAME=tlin
+BINARY_UNIX=$(BINARY_NAME)_unix
+BINARY_WINDOWS=$(BINARY_NAME).exe
+BINARY_MAC=$(BINARY_NAME)_mac
+
+# Main package path
+MAIN_PACKAGE=./cmd/tlin
+
+# Build the project
+all: test build
+
+build:
+	$(GOBUILD) -o $(BINARY_NAME) -v $(MAIN_PACKAGE)
+
+# Cross compilation
+build-linux:
+	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 $(GOBUILD) -o $(BINARY_UNIX) -v $(MAIN_PACKAGE)
+
+build-windows:
+	CGO_ENABLED=0 GOOS=windows GOARCH=amd64 $(GOBUILD) -o $(BINARY_WINDOWS) -v $(MAIN_PACKAGE)
+
+build-mac:
+	CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 $(GOBUILD) -o $(BINARY_MAC) -v $(MAIN_PACKAGE)
+
+test:
+	$(GOTEST) -v ./...
+
+clean:
+	$(GOCLEAN)
+	rm -f $(BINARY_NAME)
+	rm -f $(BINARY_UNIX)
+	rm -f $(BINARY_WINDOWS)
+	rm -f $(BINARY_MAC)
+
+run:
+	$(GOBUILD) -o $(BINARY_NAME) -v $(MAIN_PACKAGE)
+	./$(BINARY_NAME)
+
+# Cross compilation
+build-all: build-linux build-windows build-mac
+
+# Dependencies
+deps:
+	$(GOGET) -v ./...
+
+# Install golangci-lint
+install-linter:
+	curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin
+
+# Run golangci-lint
+lint:
+	golangci-lint run
+
+.PHONY: all build test clean run deps build-linux build-windows build-mac build-all install-linter lint

README.md

@@ -159,6 +159,34 @@ The output will show:
 
 Use this feature to identify complex parts of your codebase that might benefit from refactoring.
 
+## Control Flow Graph (CFG) [Experimental]
+
+tlin supports generating control flow graphs (CFG) for functions, A CFG is a representation of all paths that might be traversed through a program during its execution.
+
+### What is CFG?
+
+A Control Flow Graph (CFG) is a graphical representation of the flow of control in a program. It shows:
+
+- All possible execution paths in a function
+- Basic blocks of code (sequences of instructions with no branches except at the end)
+- Branching points (if statements, loops, etc.)
+- Function entry and exit points
+
+### How to Generate CFG?
+
+To generate a CFG for a specific function, use the follow command:
+
+```bash
+tlin -cfg -func <function_name> <path>
+```
+
+Where:
+
+- `<function_name>` is the name of the function you want to analyze
+- `<file_or_directory_path>` is the path to the file or directory containing the function
+
+When you run this command, it outputs a string in DOT format. However, exporting to a file after rendering is not yet supported.
+
 ## Contributing
 
 We welcome all forms of contributions, including bug reports, feature requests, and pull requests. Please feel free to open an issue or submit a pull request.