added links

added link of plantuml and url format of getting diagram image (GET request).

Extras.md

@@ -1,5 +1,5 @@
 [![Formula](https://latex.codecogs.com/gif.latex?\int%20N|_a|^v|_e|^e|n|^S_R\int "https://latex.codecogs.com/gif.latex?<formula>")](https://www.codecogs.com/latex/eqneditor.php)
 
-Plantuml Code | Diagrame
---------------|--------:
+[Plantuml Code](https://plantuml.com/ "@plantuml") | [Diagrame](http://www.plantuml.com/plantuml/png/ "http://www.plantuml.com/plantuml/png/<Encoded_form_of_plantuml_code>")
+---------------------------------------------------|------------------------------------------------------------------------------:
 `@startuml`<br>`header Page Header`<br>`footer Page %page% of %lastpage%`<br>`title Sequence Diagram`<br><br>`participant 1 #red `<br>`participant "Two!" as 2`<br>`actor "man" as 3`<br>`'boundary control entity database collections `<br><br>`1 --> 2 : <connection>`<br>`1 <--> 2 : <handshake>`<br>`1 -> 2 : hello`<br>`1 <- 2 : yes`<br>`1 <-> 2 : Let's Share`<br>`1 <-- 2 : <close_signal>`<br>`'1 - 2`<br>`'1 -- 2`<br><br>`2 ->x 3 : lost message`<br>`2 -x 3 : no difference`<br>`2 x-> 3`<br>`2 x-x 3`<br>`2 x<-[#green]>x 3`<br>`2 <-x 3`<br>`2 x- 3`<br>`2 x<[#0000FF]- 3`<br><br>`1 ->o 2`<br>`'1 -o 2`<br>`1 o-> 2`<br>`'1 o-o 2`<br>`1 o<->o 2`<br>`1 <-o 2`<br>`'1 o- 2`<br>`1 o<- 2`<br><br>`2 ->> 3`<br>`2 -\\ 3`<br>`2 -// 3`<br>`2 -/ 3`<br>`2 -\ 3`<br>`2 <<- 3`<br>`2 //- 3`<br>`2 \\- 3`<br>`2 /- 3`<br>`2 \- 3`<br>`2 <<->> 3`<br><br>`1 /-/ 2 : "no diff as <-/"`<br>`1 <-/ 2 : "double side slash is\nnot working correctly"`<br><br>`2 -> 2 : loop`<br>`-> 2 : "<b>from <font color="red">somewhere"`<br>`2 <- : "<b>from </b>somewhere"`<br>`@enduml`|[![Diagrame for the code](http://www.plantuml.com/plantuml/png/LP11Zzem48Nl_XLJ8yGfIe5RbKPxg5Ozz51fUrjMrH1F4ckT6MeR0V--ZfrKNGwypFUUHyz-2X5zl4vEZOI6FFp4WU1x_bQzI5pHzfB-jo0zR1s6c2SLRNG4B_JdIjmHVBCuU9oKkgITjhCNv0Xxs7Woy87fNpVvf04371HsKJpe2Jc3ezgTvSe6_GCwuUZ50N6qyG468vunKEBEKHUjS02bzb1LBHpW2pJf01UZJRZvnqTa4qPyfnalS2Jd9AVo-A2GXsB-eBWBy3AYfx9esUyaqEzW1qRNgjqU4iyogpgarNSufc2AHPWe11neneMoWB5zJvwuc_6zQk6OzLwqgLutWoVYjxQGPdMg9V2w-Pn-pyzlCyXtaQL1qZHBrPPPLj3aIBw4hDRghALBZUfqAbhNHHSfj6bAXxekUZeLNSTgIPLjQf-CEZ-QNguD65A7MkSgYnKSXX4iWv7hsH44Q-Z4DW1BX9luTyi3TE8zTT4zT6cRZpgHYrg-TNDkUoyJDBrmJ7ad_glsP7GRPABRI9vqViqFuVhyl_r4RAwJ-mi0 "one of 18 diagrams")](http://www.plantuml.com/plantuml"http://www.plantuml.com/plantuml")