README.md in pgdexter-0.1.4 vs README.md in pgdexter-0.1.5

@@ -35,11 +35,11 @@
 ## How to Use
 
 Dexter needs a connection to your database and a log file to process.
 
 ```sh
-tail -F -n +1 <log-file> | dexter <database-url>
+tail -F -n +1 <log-file> | dexter <connection-string>
 ```
 
 This finds slow queries and generates output like:
 
 ```
@@ -60,26 +60,54 @@
 2017-06-25T17:52:22+00:00 Index found: ratings (user_id)
 2017-06-25T17:52:22+00:00 Creating index: CREATE INDEX CONCURRENTLY ON "ratings" ("user_id")
 2017-06-25T17:52:37+00:00 Index created: 15243 ms
 ```
 
-## Single Statement Mode
+## Connection String
 
-You can also pass a single statement with:
+The connection string is a URI with the format:
 
-```sh
-dexter <database-url> -s "SELECT * FROM ..."
 ```
+postgresql://user:pass@host:5432/dbname
+```
 
+To connect through a socket, just pass the database name.
+
+```
+dbname
+```
+
 ## Options
 
 Name | Description | Default
 --- | --- | ---
 exclude | prevent specific tables from being indexed | None
 interval | time to wait between processing queries, in seconds | 60
 log-level | `debug` gives additional info for suggested indexes<br />`debug2` gives additional info for processed queries | info
 log-sql | log SQL statements executed | false
 min-time | only process queries consuming a min amount of DB time, in minutes | 0
+
+## Single Statement Mode
+
+You can pass a single statement with:
+
+```sh
+dexter <connection-string> -s "SELECT * FROM ..."
+```
+
+## Examples
+
+Ubuntu with PostgreSQL 9.6
+
+```sh
+tail -F -n +1 /var/log/postgresql/postgresql-9.6-main.log | sudo -u postgres dexter dbname
+```
+
+Homebrew on Mac
+
+```sh
+tail -F -n +1 /usr/local/var/postgres/server.log | dexter dbname
+```
 
 ## Future Work
 
 [Here are some ideas](https://github.com/ankane/dexter/issues/1)