added config files

README.md

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+# Parser
+## Explanation of options:
+```cpp
+// Bison version
+%require "3.0.4"
+
+// skeleton program to be used as parser
+%skeleton "lalr1.cc" 
+
+// tells bison to generate a header file
+%defines 
+
+// where the parser will live (in what namespace)
+%define api.prefix {yy} 
+
+// the name of parser class
+%define api.parser.class {Parser} 
+
+/* it will generate a location class which can be used in your lexer */
+%locations
+
+/* use the constructor for each token, and make_TOKENNAME functions will be generated */
+%define api.token.constructor 
+
+/* use the variant type for $1~$n and $$ those variables */
+%define api.value.type variant
+
+%define parse.trace
+%define parse.error verbose
+```