Bug fix

Now can deal with enum values containing underscores, such as:
  - _ABC,
  - DE_F,
  - GHI_,
  - __ABC_,
  - ___DE_F__,
  - etc.

See #44 for the reported issue.

lib/dsl/exemple.jh

@@ -1,5 +1,5 @@
-sentity Departement{
-	departementName String
+entity Department{
+	departmentName String
 }
 
 entity JobHistory{
@@ -21,7 +21,7 @@ entity Employee{
 	phoneNumber String,
 	hireDAte DateTime,
 	salary Long,
-	comissionPct Long
+	commissionPct Long
 }
 
 entity Location {
@@ -42,7 +42,7 @@ entity Country{
 
 
 relationship OneToMany{
-	Departement{employee} to Employee{departement}
+	Department{employee} to Employee{departement}
 }
 
 relationship OneToMany{
@@ -66,5 +66,5 @@ relationship ManyToMany{
 }
 
 relationship OneToOne{
-	Departement{location} to Location{department}
+	Department{location} to Location{department}
 }

lib/dsl/grammar.txt

@@ -1,8 +1,8 @@
 /*
  *
- * This the grammar we used to generate the parser jhGrammar.js
- *   We use the online tool http://pegjs.org/online to generate the  parser
- *   Modifying this file wont affect the program, this just to have a more readable grammar. 
+ * This the grammar we use to generate the parser jhGrammar.js.
+ *   We use the online tool http://pegjs.org/online to generate the parser.
+ *   Modifying this file won't affect the program, this is just to have a more readable grammar. 
  */
 
 {
@@ -89,7 +89,7 @@ ENUMNAME "an enum name"
   = head:[A-Z]tail:[a-zA-Z0-9]*                                                        {return makeString(concat([head],tail));}
 
 ENUMPROP "an enum property"
-  = word:[A-Z0-9]+                                                                     {return makeString(word);}
+  = underscore:[_]*head:[A-Z0-9]tail:[A-Z0-9_]*                                                                    {return makeString(concat(concat(underscore,[head]), tail));}
 
 INTEGER "integer"
   = int:[0-9]+                                                                         {return parseInt(int.join(""), 10);}