Update readme and work on SCM to C translator

shared/scm2c/main.c

@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include "scm_support.h"
+
+int main() {
+    int val;
+    int *argl;
+    void *cont, *entry, *proc, *env;
+
+    proc = lookup_variable_value("+", env);
+    val = 1;
+    argl = list(val);
+    val = 1;
+    argl = cons(val, argl);
+    if (primitive_procedure(proc) == 1)
+        goto primitivebranch3;
+compiledbranch2:
+    cont = &&aftercall1;
+    entry = compiled_procedure_entry(proc);
+    goto *entry;
+primitivebranch3:
+    val = proc(argl);
+aftercall1:
+    printf("%u\n", val);
+}