Support PlantUML State Diagrams

[Hugo Freire Gil]

Gravizo should support PlantUML State Diagrams:

@startuml

[*] --> State1
State1 --> [*]
State1 : this is a string
State1 : this is another string

State1 -> State2
State2 --> [*]

@enduml

[Hugo Freire Gil]

Fixed

![Alt text](http://g.gravizo.com/g?
  @startuml;
  skinparam backgroundColor LightYellow;
  skinparam state {;
    StartColor MediumBlue;
    EndColor Red;
    BackgroundColor Peru;
    BackgroundColor<<Warning>> Olive;
    BorderColor Gray;
    FontName Impact;
  };
  [*] --> NotShooting;
  state "Not Shooting State" as NotShooting {;
    state "Idle mode" as Idle <<Warning>>;
    state "Configuring mode" as Configuring;
    [*] --> Idle;
    Idle --> Configuring : EvConfig;
    Configuring --> Idle : EvConfig;
  };
  NotShooting --> [*]; 
  @enduml
)

![Alt text](http://g.gravizo.com/g?
@startuml;
skinparam backgroundColor LightYellow;
skinparam state {;
StartColor MediumBlue;
EndColor Red;
BackgroundColor Peru;
BackgroundColor<> Olive;
BorderColor Gray;
FontName Impact;
};
[] --> NotShooting;
state "Not Shooting State" as NotShooting {;
state "Idle mode" as Idle <>;
state "Configuring mode" as Configuring;
[] --> Idle;
Idle --> Configuring : EvConfig;
Configuring --> Idle : EvConfig;
};
NotShooting --> [*];
@enduml)

[Hugo Freire Gil]

And uml class diagram:

/**
*Structural Things
*@opt commentname
*@note Notes can
*be extended to
*span multiple lines
*/
class Structural{}

/**
*@opt all
*@note Class
*/
class Counter extends Structural {
        static public int counter;
        public int getCounter%28%29;
}

/**
*@opt shape activeclass
*@opt all
*@note Active Class
*/
class RunningCounter extends Counter{}