Update README.md

README.md

@@ -12,3 +12,10 @@ The repo contains the following notable folders and files:
     * `parser.cpp` - a singleton class which is used in `parser.y`...
     * `parser.y` - bison rules for parsing tokens. This contains only a handful of rules...
     * `lexer.l` - lex rules for the vmassembler...
+
+### Usage Requirements
+
+In order to use the virtual instruction assembler you must first have a few values at hand. The required values are listed below:
+
+* `vm_entry rva` - relative virtual address to a vm_entry...
+* `image base` - image base value from optional headers...