Executable-Test-Cases.md

 # Executable Test Cases
-**Scenario 4**
+### Scenario 1
+
+Command:
+`./csvfilter --drop:3:SomeTown case4.csv`
+
+case1.csv:
+```
+John,Doe,120 Jefferson St.,Riverside, NJ,8075
+Jack,McGinnis,220 Hobo Ave.,Phila,PA,9119
+John,Repici,120 Jefferson St.,Riverside,NJ,8075
+Stephen,Tyler,7452 Terrace Road,SomeTown,SD,91234
+,Blankman,,SomeTown,SD,298
+Joan,Anne,Jet,9 Terrace Place,Desert City,CO,123
+```
+
+Output:
+```
+John,Doe,120 Jefferson St.,Riverside, NJ,8075
+Jack,McGinnis,220 Hobo Ave.,Phila,PA,9119
+John,Repici,120 Jefferson St.,Riverside,NJ,8075
+Joan,Anne,Jet,9 Terrace Place,Desert City,CO,123
+```
+
+### Scenario 4
 
 Command:
 `./csvfilter --drop:City:SomeTown case4.csv`