.bashrc: Enable pyenv-virtualenv

Needs to be cloned into pyenv's plugins folder, see:

https://github.com/yyuu/pyenv-virtualenv

Signed-off-by: Alan Orth <alan.orth@gmail.com>

.bashrc

@@ -48,6 +48,11 @@ if [[ -d ~/.pyenv ]]; then
     export PATH="$PYENV_ROOT/bin:$PATH"
 
     eval "$(pyenv init -)"
+    # optionally enable pyenv-virtualenv
+    # See: https://github.com/yyuu/pyenv-virtualenv
+    if [[ -d ~/.pyenv/plugins/pyenv-virtualenv ]]; then
+        eval "$(pyenv virtualenv-init -)"
+    fi
 fi
 
 # If a private bin directory exists, add it to PATH