Update documentation

docs/api-json-rpc.markdown

@@ -163,6 +163,29 @@ Array
 )
 ```
 
+### Example with Ruby
+
+This example can be used with Kanboard configured with Reverse-Proxy authentication and the API configured with a custom authentication header:
+
+```ruby
+require 'faraday'
+
+conn = Faraday.new(:url => 'https://kanboard.example.com') do |faraday|
+    faraday.response :logger
+    faraday.headers['X-API-Auth'] = 'XXX'      # base64_encode('jsonrpc:API_KEY')
+    faraday.basic_auth(ENV['user'], ENV['pw']) # user/pass to get through basic auth
+    faraday.adapter Faraday.default_adapter    # make requests with Net::HTTP
+end
+
+response = conn.post do |req|
+    req.url '/jsonrpc.php'
+    req.headers['Content-Type'] = 'application/json'
+    req.body = '{ "jsonrpc": "2.0", "id": 1, "method": "getAllProjects" }'
+end
+
+puts response.body
+```
+
 Procedures
 ----------
 

docs/calendar.markdown

@@ -8,11 +8,13 @@ There are two different views for the calendar:
 
 At this time the calendar is able to display these information:
 
-- Tasks with a due date, displayed at the top. The date can be changed by moving the task to another day.
-- Tasks based on the creation date or the start date. These events cannot be modified with the calendar.
+- Tasks with a due date, displayed at the top. **The due date can be changed by moving the task to another day**.
+- Tasks based on the creation date or the start date. **These events cannot be modified with the calendar**.
 - Subtask time tracking, all recorded time slot will be shown in the calendar.
 - Subtask estimates, forecast of work left
 
 ![Calendar](http://kanboard.net/screenshots/documentation/calendar.png)
 
 The calendar configuration can be changed in the settings page.
+
+Note: The due date doesn't contains time information.

docs/config.markdown

@@ -4,14 +4,14 @@ Config file
 You can customize the default settings of Kanboard by adding a file `config.php` at the project root.
 You can also rename the `config.default.php` and change the desired values.
 
-Enable/Disable debug
---------------------
+Enable/Disable debug mode
+-------------------------
 
 ```php
 define('DEBUG', false);
 ```
 
-The debug mode log all SQL queries and the time taken to generate pages.
+The debug mode logs all SQL queries and the time taken to generate pages.
 
 Debug file path
 ---------------
@@ -21,6 +21,7 @@ define('DEBUG_FILE', __DIR__.'/data/debug.log');
 ```
 
 All debug information are saved in this file.
+If you prefer to send logs to `stdout` or `stderr` replace the value by `php://stdout` or `php://stderr`.
 
 Folder for uploaded files
 -------------------------

docs/recurring-tasks.markdown

@@ -1,6 +1,8 @@
 Recurring tasks
 ===============
 
+To fit with the Kanban methodology, the recurring tasks are not based on a date but on board events.
+
 - Recurring tasks are duplicated to the first column of the board when the selected events occurs
 - The due date can be recalculated automatically
 - Each task records the task id of the parent task that created it and the child task created