Update env install yaml file

Author: htyao

.github/workflows/remove_solution.yml

@@ -18,7 +18,7 @@ env:
   FILE1_POST: 1_ViennaRNA_Introduction_No_Solution.ipynb
   FILE2_PRE: 2_Practical_Example.ipynb
   FILE2_POST: 2_Practical_Example_No_Solution.ipynb
-  OTHER_FILES: README.md 2_input .github/workflows
+  OTHER_FILES: README.md 2_input .github/workflows .gitignore viennarna-tutorial.yml
 
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:

.gitignore

@@ -0,0 +1,9 @@
+.ipynb_checkpoints/
+*.png
+*.svg
+*.ps
+*.jpg
+*.out
+*.aln
+*.fa
+*.samples