pipgrip: Generate Bash completions

Author: StenAL

Formula/p/pipgrip.rb

@@ -49,7 +49,7 @@ class Pipgrip < Formula
   def install
     virtualenv_install_with_resources
 
-    generate_completions_from_executable(bin/"pipgrip", shells: [:fish, :zsh], shell_parameter_format: :click)
+    generate_completions_from_executable(bin/"pipgrip", shells: [:bash, :fish, :zsh], shell_parameter_format: :click)
   end
 
   test do