README.md in qnap-file_station-0.0.4 vs README.md in qnap-file_station-0.0.5

@@ -37,10 +37,25 @@
 	# logout is automatically called, even if there was an exception
 end
 
 ```
 
+Alternatively, if the username and password are not provided, Qnap::FileStation will attempt to read them from environment variables.
+```ruby
+# ENV['QNAP_USERNAME']
+# ENV['QNAP_PASSWORD']
+
+fs = Qnap::FileStation.new '192.168.1.100'
+# ...
+fs.logout
+
+# or...
+Qnap::FileStation.session('192.168.1.100') do |fs|
+	# ...
+end
+```
+
 Constants
 -------
 `Qnap::FileStation::DEBUG`, default: `false`. Print extensive debugging information to `$stdout` if `true`
 
 `Qnap::FileStation::DISCARD_EXTRANEOUS`, default: `true`, Discard any parameters we're not expecting before despatching to the API
@@ -288,11 +303,11 @@
 --- | ---
 path | Folder path.
 file_total | Total number of folder/file(s).
 file_name | Folder/file name.
 
-### stat 
+### stat
 Set folder(s)/file(s) modification time.
 
 #### Parameters
 Key | Description
 --- | ---
@@ -314,11 +329,11 @@
 dir | Sorting direction. ASC: Ascending , DESC: Descending
 limit | Number of response data
 sort | Sort field (filename/filesize/filetype/mt/privilege/owner/group)
 start | Response data start index
 
-### 
+###
 Download a shared file by an unique ID (ssid).
 
 #### Parameters
 Key | Description
 --- | ---
@@ -461,10 +476,10 @@
 Show available network players (AirPlay, Chromecast, DLNA players, etc.) May not be available, depending on model
 
 #### Parameters
 Key | Description
 --- | ---
-op | 1: 
+op | 1:
 
 ### video_ml_queue
 Retrieve the status of media library transcoding queue.
 
 #### Parameters