Added contract process execution functions. (#6)

src/main.cpp

@@ -4,8 +4,10 @@
 
 #include <cstdio>
 #include <iostream>
+#include <unistd.h>
 #include "conf.h"
 #include "crypto.h"
+#include "proc.h"
 
 using namespace std;
 
@@ -28,6 +30,11 @@ int main(int argc, char **argv)
             cerr << "Init error\n";
             return -1;
         }
+
+        if (conf::ctx.command == "run")
+        {
+            //TODO
+        }
     }
 
     cout << "exited normally\n";