adding of rotatevowels en and fr placeholder

subjects/rotatevowels.en.md

@@ -4,22 +4,24 @@
 
 Write a **program** that checks the arguments for vowels.
 
-- If the argument contains vowels you have to reverse the order of the vowels in the argument.
-- If the number of arguments are less than 1, the program display a new line, `\n`.
-- If the arguments doesn't have any vowels, the program just print the arguments.
+- If the argument contains vowels (for this exercise `y` is not considered a vowel) the program has to **"mirror"** the position of the vowels in the argument (see the examples).
+- If the number of arguments is less than 1, the program display a new line ("`\n`").
+- If the arguments does not have any vowels, the program just prints the arguments.
 
 Example of output :
 
 ```console
 student@ubuntu:~/piscine-go/test$ go build
-student@ubuntu:~/piscine-go/test$ ./rotatevowels "Hello World"
-Hollo Werld
-student@ubuntu:~/piscine-go/test$ ./rotatevowels "Hello World" "problem solved"
-Hello Werld problom solved
+student@ubuntu:~/piscine-go/test$ ./rotatevowels "Hello World" | cat -e
+Hollo Werld$
+student@ubuntu:~/piscine-go/test$ ./rotatevowels "HEllO World" "problem solved"
+Hello Werld problom sOlvEd
 student@ubuntu:~/piscine-go/test$ ./rotatevowels "str" "shh" "psst"
 str shh psst
 student@ubuntu:~/piscine-go/test$ ./rotatevowels "happy thoughts" "good luck"
 huppy thooghts guod lack
+student@ubuntu:~/piscine-go/test$ ./rotatevowels "aEi" "Ou"
+uOi Ea
 student@ubuntu:~/piscine-go/test$ ./rotatevowels
 
 student@ubuntu:~/piscine-go/test$

subjects/rotatevowels.fr.md

@@ -0,0 +1,28 @@
+## rotatevowels
+
+### Instructions
+
+Write a **program** that checks the arguments for vowels.
+
+- If the argument contains vowels (for this exercise `y` is not considered a vowel) the program has to **"mirror"** the position of the vowels in the argument (see the examples).
+- If the number of arguments is less than 1, the program display a new line ("`\n`").
+- If the arguments does not have any vowels, the program just prints the arguments.
+
+Example of output :
+
+```console
+student@ubuntu:~/piscine-go/test$ go build
+student@ubuntu:~/piscine-go/test$ ./rotatevowels "Hello World" | cat -e
+Hollo Werld$
+student@ubuntu:~/piscine-go/test$ ./rotatevowels "HEllO World" "problem solved"
+Hello Werld problom sOlvEd
+student@ubuntu:~/piscine-go/test$ ./rotatevowels "str" "shh" "psst"
+str shh psst
+student@ubuntu:~/piscine-go/test$ ./rotatevowels "happy thoughts" "good luck"
+huppy thooghts guod lack
+student@ubuntu:~/piscine-go/test$ ./rotatevowels "aEi" "Ou"
+uOi Ea
+student@ubuntu:~/piscine-go/test$ ./rotatevowels
+
+student@ubuntu:~/piscine-go/test$
+```