Rename project to incenp.certbot.ssh.

The previous name incenp.certbot-ssh was needlessy using both a
dot and a dash. Since the name must be used on the command line
when calling Certbot, it's probably best to keep it simple.

.gitignore

@@ -1,3 +1,3 @@
 build
 dist
-incenp.certbot_ssh.egg-info
+incenp.certbot.ssh.egg-info

README.md

@@ -45,8 +45,8 @@ executable.
 Then you may call Certbot:
 
     certbot certonly \
-      --authenticator certbot-ssh:ssh \
-      --certbot-ssh:ssh-server user@server.example.com \
+      --authenticator incenp.certbot.ssh:ssh \
+      --incenp.certbot.ssh:ssh-server user@server.example.com \
       ...
 
 Note that the client will attempt to write to some system directories on

setup.py

@@ -4,8 +4,8 @@ with open('README.md', 'r') as fh:
     long_description = fh.read()
 
 setup(
-        name = 'incenp.certbot-ssh',
-        version = '0.2.1',
+        name = 'incenp.certbot.ssh',
+        version = '0.2.2',
         description = 'Certbot SSH authenticator plugin',
         long_description = long_description,
         long_description_content_type = 'text/markdown',