Checked markdown, added diagnostics

README.md

 es una ecuación cuadrática cuya parábola abre hacia abajo e interseca el eje de $x$ en $x_1=-2$ y $x_2=3$. Nota que, en esta ecuación, los valores de $a,b,c$  son $a=-1, \ b=1, \ c=6$.
 
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+---
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+!INCLUDE "../../eip-diagnostic/quadratic-frog/es/diag-quadratic-frog-01.html"
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+!INCLUDE "../../eip-diagnostic/quadratic-frog/es/diag-quadratic-frog-06.html"
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+!INCLUDE "../../eip-diagnostic/quadratic-frog/es/diag-quadratic-frog-07.html"
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+!INCLUDE "../../eip-diagnostic/quadratic-frog/es/diag-quadratic-frog-08.html"
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+---
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 ##Sesión de laboratorio:
 
 ###Ejercicio 1
 
 
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+!INCLUDE "../../eip-diagnostic/quadratic-frog/en/diag-quadratic-frog-01.html"
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+!INCLUDE "../../eip-diagnostic/quadratic-frog/en/diag-quadratic-frog-06.html"
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+!INCLUDE "../../eip-diagnostic/quadratic-frog/en/diag-quadratic-frog-07.html"
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+!INCLUDE "../../eip-diagnostic/quadratic-frog/en/diag-quadratic-frog-08.html"
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+---
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+---
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 ##Laboratory session:
 
 ###Exercise 1