support older bash versions - resolves #116

algo

@@ -103,9 +103,10 @@ Enter your aws_secret_key (http://docs.aws.amazon.com/general/latest/gr/managing
 Note: Make sure to use either your root key (recommended) or an IAM user with an acceptable policy attached
 [ABCD...]: " -rs aws_secret_key
 
-  read -e -p "
-Enter the local path to your SSH public key:
-: " -i "~/.ssh/id_rsa.pub" -r ssh_public_key
+
+  read -p "
+Enter the local path to your SSH public key (~/.ssh/id_rsa.pub): " -r ssh_public_key_file
+ssh_public_key=${ssh_public_key_file:-$HOME/.ssh/id_rsa.pub}
 
   read -p "
 Name the vpn server:
@@ -154,9 +155,9 @@ gce () {
 Enter the local path to your credentials JSON file (https://support.google.com/cloud/answer/6158849?hl=en&ref_topic=6262490#serviceaccounts):
 : " -r credentials_file
 
-  read -e -p "
-Enter the local path to your SSH public key:
-: " -i "~/.ssh/id_rsa.pub" -r ssh_public_key
+  read -p "
+Enter the local path to your SSH public key (~/.ssh/id_rsa.pub): " -r ssh_public_key
+ssh_public_key=${ssh_public_key_file:-$HOME/.ssh/id_rsa.pub}
 
   read -p "
 Name the vpn server: