Switch to Python 3 as default, still support Python 2.7

Author: maddes-b

README

@@ -43,8 +43,8 @@ DESCRIPTION
     Installation
     ============
 
-    All you need to run ssh-ident is a standard installation of python 2 (>= 2.6).
-    Python 3 is supported, but newer versions may deprecate stuff and will fail.
+    All you need to run ssh-ident is a standard installation of python 3 or 2.7.
+    Newer versions of Python 3 may deprecate stuff and will fail.
 
     If your system has wget and are impatient to use it, you can install
     ssh-ident with two simple commands:

ssh-ident

@@ -1,7 +1,7 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # vim: tabstop=2 shiftwidth=2 expandtab
-### shebang `/usr/bin/env python` due to Python Virtual Environment
-### if missing on Debian/Ubuntu use package python-is-python3, otherwise create symlink in /usr/local/bin or change shebang
+### shebang `/usr/bin/env python3` due to Python Virtual Environment
+### if using Python 2.7, then change shebang otherwise create symlink in /usr/local/bin or virtual environment
 """Start and use ssh-agent and load identities as necessary.
 
 Use this script to start ssh-agents and load ssh keys on demand,
@@ -40,8 +40,8 @@ In any case, ssh-ident:
 Installation
 ============
 
-All you need to run ssh-ident is a standard installation of python 2 (>= 2.6).
-Python 3 is supported, but newer versions may deprecate stuff and will fail.
+All you need to run ssh-ident is a standard installation of python 3 or 2.7.
+Newer versions of Python 3 may deprecate stuff and will fail.
 
 If your system has wget and are impatient to use it, you can install
 ssh-ident with two simple commands: