Update GIT_ASSIGNMENT.md with new screenshots and notes

GIT_ASSIGNMENT.md

@@ -59,7 +59,7 @@ Version control is better than emailing files because it keeps a single source o
 
 ## Git Log (graph)
 
-![Git log graph](git log_oneline.png)
+![Git log graph](Git_Log_Graph.png)
 
 ---
 
@@ -71,7 +71,7 @@ Version control is better than emailing files because it keeps a single source o
 
 ## Git Diff (commit1 vs commit2)
 
-![Git diff between two commits](git_diff_between_commits.png)
+![Git diff between two commits](diff_two_commit.png)
 
 ---
 
@@ -95,6 +95,7 @@ Version control is better than emailing files because it keeps a single source o
 
 ## Ignoring Files with .gitignore
 
-![Ignoring Files with .gitignore](Ignoring_Files_with_.gitignore.png)
+![Ignoring Files with .gitignore](ignoring.png)
 
 ---
+cd D:\git-practice-Rahul

secret.txt

@@ -0,0 +1 @@
+"This is a secret file" 

todo.txt

@@ -1,2 +1,3 @@
 "My first todo item" 
 "Another task to do" 
+hi