On branch main

Changes to be committed:
	new file:   .env.interactive
 - env file to change bash prompt and update $PATH
	new file:   .gitignore
 - added vim swap files

.env.interactive

@@ -0,0 +1,9 @@
+export ORIGINAL_PATH=$PATH
+export ORIGINAL_PS1=$PS1
+export PATH=$(dirname $BASH_SOURCE):$PATH
+export PS1="\[$(tput setaf 2)\]_euler-gerbil_\[$(tput sgr0)\]\u@\h:\w$ "
+euler_exit () {
+export PATH=$ORIGINAL_PATH
+export PS1=$ORIGINAL_PS1
+echo -e "\n\nExiting euler problems environment...\n\n\nBye!\n"
+}

.gitignore

@@ -0,0 +1 @@
+.*.sw*