add ignore to index and fix url

2019/2019-10-10_advancedGitTraining-SIU/slides/gettingStarted.md

@@ -11,7 +11,7 @@
     ```bash
     $ cd advanced-git-practice
     # add upstream URL
-    $ git remote add upstream git@github.com:<first.last>/advanced-git-practice.git
+    $ git remote add upstream git@github.com:LCSB-BioCore/advanced-git-practice.git
     $ git fetch upstream
     ```
 * Check the remotes with:

2019/2019-10-10_advancedGitTraining-SIU/slides/overview.md

@@ -2,16 +2,18 @@
 
 1. Installation and getting started
 
-2. Amend last commit
+2. Ignoring files
 
-3. Resetting to a previous commit
+3. Amend last commit
 
-4. Reverting commits
+4. Resetting to a previous commit
 
-5. Rebasing in Git
+5. Reverting commits
 
-6. Git cherry-picking
+6. Rebasing in Git
 
-7. Merging branches
+7. Git cherry-picking
 
-8. Conflict Resolution
+8. Merging branches
+
+9. Conflict Resolution