Create README.md

Author: breadbyte

README.md

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+# patch1337-to-cpp
+Converts a `.1337` file to a `.cpp` runtime patcher.
+
+Uses code from https://stackoverflow.com/a/48737037 to patch on runtime, thanks!
+
+Sample output:
+```cpp
+#include <vector>
+#include <windows.h>
+int BaseAddress = (int)GetModuleHandle(nullptr);
+struct PatchAddress { int Address; unsigned char OldByte; unsigned char NewByte; };
+struct Patch { const char* ModuleName; std::vector<PatchAddress> Patches;};
+
+void PatchUChar(unsigned char* dst, unsigned char* src, int size) {
+DWORD oldprotect;
+VirtualProtect(dst, size, PAGE_EXECUTE_READWRITE, &oldprotect);
+memcpy(dst, src, size);
+VirtualProtect(dst, size, oldprotect, &oldprotect); };
+
+Patch executable_exe = { "executable.exe", {
+PatchAddress{ 126805, 87, 88 },
+PatchAddress{ 126885, 7, 8 },
+PatchAddress{ 126948, 200, 201 },
+PatchAddress{ 126965, 183, 184 },
+PatchAddress{ 126982, 166, 167 },
+PatchAddress{ 126999, 149, 150 },
+PatchAddress{ 127019, 129, 130 },
+PatchAddress{ 127036, 112, 113 },
+PatchAddress{ 127529, 131, 132 },
+PatchAddress{ 127575, 85, 86 },
+PatchAddress{ 127621, 39, 40 },
+} };
+void patch_executable_exe() {
+for (PatchAddress addr : executable_exe.Patches) {
+PatchUChar((unsigned char*)(BaseAddress + addr.Address), &addr.NewByte, 1); }
+};
+void unpatch_executable_exe() {
+for (PatchAddress addr : executable_exe.Patches) {
+PatchUChar((unsigned char*)(BaseAddress + addr.Address), &addr.OldByte, 1); }
+};
+```