Fixes eclipse-vorto#253 - Update DSL Grammar.

Signed-off-by: Erle Czar Mantos <[email protected]>

website/UpdatesOnTheDSL.md

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+## Improvements to the Vorto DSL
+
+### Description on operation Parameters:
+
+Now you can add descriptions for each operation parameters. Example:
+
+```
+operations { 
+    drive(leftWheelSpeed as float "Speed of left wheel", rightWheelSpeed as float "Speed of right wheel") returns boolean 
+} 
+```
+
+### Constraint on operation parameters and return type:
+
+Previously, you can only specify constraints on properties. Now you can also specify them on operation parameters and return types. Example:
+
+```
+operations {
+    move(leftWheelSpeed as float <MIN 0, MAX 512>, rightWheelSpeed as float <MIN 0, MAX 512>) "Moves the wheels"
+    currentMotorHeat() returns float <MIN -200, MAX 200> "Returns the current motor heawt"
+}
+```
+
+### Function block can now inherit from another function block
+Previously, you can only specify inheritance relationship on Datatypes. Now you can also specify it in Function blocks.
+```
+functionblock DifferentDriveWithSkidWheel extends com.mycompany.fb.DifferentialDrive {
+```
+
+### Measurement Unit, Readable, Writeable, Eventable
+
+You can specify a measurement unit for any properties that you add. You can also specify if they are readable, writeable
+or eventable.
+
+Example:
+
+```
+status {
+    mandatory motorHeat as float with { measurementUnit : Temp.Celsius, readable : true, writable : true, eventable : false }
+}
+```
+
+### Breakable:
+
+You can also specify if an operation in your function block can throw an error by specifying it as
+breakable, like so:
+
+```
+operations {
+	move(leftWheelSpeed as float,rightWheelSpeed as float)
+	breakable forward()
+	backward()
+	breakable turn(angle as float)
+}
+```
+
+### Dictionary Type:
+
+One of the constant request is to add a Dictionary type to Vorto. We have finally added it.
+
+```
+using com.mycompany.type.Color ; 1.0.0
+
+entity ColorLookupTable {
+	mandatory redLookupTable as Dictionary [ string , int ]
+	mandatory greenLookupTable as Dictionary [ string , int ]
+	mandatory blueLookupTable as Dictionary [ string , int ]
+	mandatory hueLookupTable as Dictionary
+	mandatory property1 as Dictionary [ string , Color ]
+	mandatory property2 as Dictionary [ string , Dictionary ]
+	mandatory property3 as Dictionary [ string , Dictionary [ int, Color ] ]
+}
+```