mark when various new flags were added to the pip & easy_install modules

easy_install

@@ -40,6 +40,7 @@ options:
     required: false
     default: null
   virtualenv_site_packages:
+    version_added: 1.1
     description:
       - Whether the virtual environment will inherit packages from the
         global site-packages directory.  Note that if this setting is
@@ -49,6 +50,7 @@ options:
     required: false
     default: no
   virtualenv_command:
+    version_added: 1.1
     description:
       - The command to create the virtual environment with. For example
         C(pyvenv), C(virtualenv), C(virtualenv2).

pip

@@ -48,6 +48,7 @@ options:
     required: false
     default: null
   virtualenv_site_packages:
+    version_added: 1.0
     description:
       - Whether the virtual environment will inherit packages from the
         global site-packages directory.  Note that if this setting is
@@ -57,6 +58,7 @@ options:
     required: false
     default: no
   virtualenv_command:
+    version_aded: 1.1
     description:
       - The command to create the virtual environment with. For example
         C(pyvenv), C(virtualenv), C(virtualenv2).