Update README.md

Author: mborgerson

README.md

@@ -14,9 +14,48 @@ build the bindings.
 Install with PIP+Git via:
 
 ```bash
-python3 -m pip install --user git+https://github.com/angr/pypcode
+python -m pip install --user git+https://github.com/angr/pypcode
 ```
 
 You can now invoke the `pypcode` module from command line to translate supported
 machine code to P-code from command line. Run `python -m pypcode --help` for
 usage information. See module source for examples of using pypcode as a library.
+
+Example
+-------
+
+```
+$ python -m pypcode -b x86:LE:64:default test-x64.bin
+--------------------------------------------------------------------------------
+00000000/2: XOR EAX,EAX
+--------------------------------------------------------------------------------
+  0: CF = 0x0
+  1: OF = 0x0
+  2: EAX = EAX ^ EAX
+  3: RAX = zext(EAX)
+  4: SF = EAX s< 0x0
+  5: ZF = EAX == 0x0
+  6: unique[0x2580:4] = EAX & 0xff
+  7: unique[0x2590:1] = popcount(unique[0x2580:4])
+  8: unique[0x25a0:1] = unique[0x2590:1] & 0x1
+  9: PF = unique[0x25a0:1] == 0x0
+
+--------------------------------------------------------------------------------
+00000002/2: CMP ESI,EAX
+--------------------------------------------------------------------------------
+  0: CF = ESI < EAX
+  1: OF = sborrow(ESI, EAX)
+  2: unique[0x5180:4] = ESI - EAX
+  3: SF = unique[0x5180:4] s< 0x0
+  4: ZF = unique[0x5180:4] == 0x0
+  5: unique[0x2580:4] = unique[0x5180:4] & 0xff
+  6: unique[0x2590:1] = popcount(unique[0x2580:4])
+  7: unique[0x25a0:1] = unique[0x2590:1] & 0x1
+  8: PF = unique[0x25a0:1] == 0x0
+
+--------------------------------------------------------------------------------
+00000004/2: JBE 0x17
+--------------------------------------------------------------------------------
+  0: unique[0x18f0:1] = CF || ZF
+  1: if (unique[0x18f0:1]) goto ram[0x17:8]
+```