docs: updated readme, added basic usage instructions

README.md

@@ -4,5 +4,31 @@
 - `python -m pip install --upgrade pip`
 - `pip install trafficinterventions xml`
 
+--- 
 ## Documentation
 All relevant files can be found [here](https://github.com/WSL-IIITB/Traffic-Interventions/tree/main/docs)
+
+--- 
+
+### Sample Usage : Edge Manipulation
+```py
+import trafficinterventions
+
+ce = trafficinterventions.ChangeEdges.ChangeEdges(fileName="sample.xml")
+
+# Sample Intervention
+ce.disallowAppendTypes(["bus"], ["-100"], "new_file.xml")
+
+```
+---
+
+### Sample Usage : Lane Manipulation
+```py
+import trafficinterventions
+
+cl = trafficinterventions.ChangeLanes.ChangeLanes(fileName="sample.xml")
+
+# Sample Intervention
+ce.changePriorityLanes(["highway.cycleway"], 100, "new_file.xml")
+
+```