add: readme file

README.md

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+# Revird
+Driver for x64 bit Windows, can read/write memory, get the address of a process/module in a process.<br>
+
+## Example usage
+You can find an example usage in the `EdomResu` folder (UserMode backwards).<br>
+
+```C++
+int main(void) {
+    QWORD proc_addr = GetProcess(L"explorer.exe");
+    QWORD mod_addr = GetProcessModule(L"explorer.exe", L"kernel32.dll");
+    BYTE mz = RPM<BYTE>(proc_addr);
+
+    printf("Address of explorer.exe : 0x%p\n", (void*)proc_addr);
+    printf("Address of kernel32.dll in explorer.exe : 0x%p\n", (void*)mod_addr);
+    printf("Header of explorer.exe : 0x%X\n", mz);
+    printf("Unloading driver...");
+    DriverUnload();
+    printf("ok.\n");
+    return 0;
+}
+```