Added discription for git log --oneline --<filename>

assignment.txt

@@ -0,0 +1,9 @@
+git log -- <filename>   :
+    shows the commmit message for a specific file.
+
+git log -p --<filename> : 
+    shows line by line changes for each commmit in a specific file
+
+git log --oneline --<filename> :
+    shows commit history in short form for the specific file
+