Switches to native Go build info for versioning

Simplifies the version command and Makefile by removing manual ldflags injection. The application now relies entirely on Go's built-in VCS metadata embedding to extract version, commit, and date information, ensuring accurate reporting across all build methods.

README.md

@@ -134,25 +134,27 @@ cd gitlocal
 # Install dependencies
 go mod download
 
-# Build with version info (recommended - uses Makefile)
+# Build the binary
 make build
-
-# Or install to $GOPATH/bin with version info
-make install
-
-# Build without version info (not recommended)
+# or
 go build -o gitlocal
 
-# Check version that would be built
-make version
+# Install to $GOPATH/bin
+make install
+# or
+go install
 ```
 
-The Makefile automatically injects version information from git tags:
-- `Version`: Git tag (e.g., `v0.1.0`) or commit hash if no tag exists
-- `Commit`: Short commit hash
-- `Date`: Build timestamp
+**Version Information:**
+Go automatically embeds version information from git when building. The `gitlocal version` command reads this embedded metadata to display:
+- Version (from git tag, e.g., `v0.1.0`)
+- Commit hash (short SHA)
+- Build timestamp
 
-**Note:** Version information is automatically included when installing via `go install` (no Makefile needed). The tool reads version info from Go's build metadata.
+This works automatically for:
+- `go install` (remote installation)
+- `go build` (local builds)
+- Pre-built binaries (when built from a git repo)
 
 Check the version after installing:
 ```bash