fist version of the lexer

docs/syntax_v2.md

@@ -0,0 +1,20 @@
+```
+def concept one as 1  --> creates a new concept 1
+def concept two as 2  --> creates a new concept 2
+def concept add(a,b) as a + b   --> create concept that need parenthesis
+def concept a plus b as add(a,b)  --> create a concept that mimic human language
+
+one plus two --> recognizes the concept 'a plus b'
+one plus two ? --> makes the addition
+
+concept a plus b --> will work on this concept
+pre: a is a number 
+
+--> ERROR : 'a is a number' is not known
+
+def concept a is a number as :
+    isinstanceof(a, number) 
+
+--> adds concept a is a number
+--> add the pre condition to the concept a plus b
+```