Add new flags usage to Getting Started (#31)

* Add new flags usage to Getting Started

* address README changes

README.md

@@ -134,6 +134,22 @@ gokart scan go-test-bench/ -d
 
 # Output results in sarif format
 gokart scan go-test-bench/ -s
+
+# Output results to file
+gokart scan go-test-bench/ -o gokart-go-test-bench.txt
+
+# Output scarif results to file
+gokart scan go-test-bench/ -o gokart-go-test-bench.txt -s
+
+# Scan remote repository (private repos require proper authentication)
+# Repository will be cloned locally, scanned and deleted afterwards
+gokart scan -r github.com/ShiftLeftSecurity/shiftleft-go-demo -v
+
+# Use remote scan and output flags together for seamless security reviews
+gokart scan -r github.com/ShiftLeftSecurity/shiftleft-go-demo -o gokart-shiftleft-go-demo.txt -v 
+
+# Use remote scan, output and sarif flags for frictionless integration into CI/CD
+gokart scan -r github.com/ShiftLeftSecurity/shiftleft-go-demo -o gokart-shiftleft-go-demo.txt -s
 ```
 
 To test out the extensibility of GoKart, you can modify the configuration file that GoKart uses to