Small README.md documentation adjustment (#204)

Adjusting two small typos in the README.md installation instructions.

Author: EthanR

README.md

@@ -50,7 +50,7 @@ We have two different ways you can do this. You can do this via the [native inst
 
       If this fails with an error message, you can [have a look at GitHub HTTPS cloning errors](https://help.github.com/articles/https-cloning-errors/).
 
-   2. Navigate to the electric-iodirectory:
+   2. Navigate to the electric-io directory:
 
       ```
       cd electric-io
@@ -64,7 +64,7 @@ We have two different ways you can do this. You can do this via the [native inst
 
       If this fails with an error message, you can [have a look at common NPM errors](https://docs.npmjs.com/common-errors).
 
-4. Open the file `.env` in and fill in the `CONNECTION_STRING` property with your Azure IoT Hub connection string.
+4. Open the file `.env` and fill in the `CONNECTION_STRING` property with your Azure IoT Hub connection string.
 5. Optional. Specify the `CONSUMER_GROUP` in `.env`. _If in doubt, you can skip this step_.
 6. Go back to your terminal and start electric-io: