Add syntax highlighting to Readmes

Readme.markdown

@@ -40,6 +40,7 @@ Examples
 
 Java language:
 
+```java
 import java.awt.image.BufferedImage;
 import java.io.File;
 import javax.imageio.ImageIO;
@@ -58,9 +59,11 @@ Java language:
         (... paint qr1.getModule(x, y) ...)
     }
 }
+```
 
 JavaScript language:
 
+```javascript
 // Name abbreviated for the sake of these examples here
 var QRC = qrcodegen.QrCode;
 
@@ -76,9 +79,11 @@ JavaScript language:
         (... paint qr1.getModule(x, y) ...)
     }
 }
+```
 
 Python language:
 
+```python
 from qrcodegen import *
 
 # Simple operation
@@ -91,9 +96,11 @@ Python language:
 for y in range(qr1.get_size()):
     for x in range(qr1.get_size()):
         (... paint qr1.get_module(x, y) ...)
+```
 
 C++ language:
 
+```cpp
 #include <string>
 #include <vector>
 #include "QrCode.hpp"
@@ -113,9 +120,11 @@ C++ language:
         (... paint qr1.getModule(x, y) ...)
     }
 }
+```
 
 C language:
 
+```c
 #include <stdbool.h>
 #include <stdint.h>
 #include "qrcodegen.h"
@@ -143,9 +152,11 @@ C language:
 uint8_t qr1[qrcodegen_BUFFER_LEN_FOR_VERSION(7)];
 ok = qrcodegen_encodeBinary(dataAndTemp, 3, qr1,
     qrcodegen_Ecc_HIGH, 2, 7, qrcodegen_Mask_4, false);
+```
 
 Rust language:
 
+```rust
 extern crate qrcodegen;
 use qrcodegen::QrCode;
 use qrcodegen::QrCodeEcc;
@@ -166,6 +177,7 @@ Rust language:
         (... paint qr1.get_module(x, y) ...)
     }
 }
+```
 
 More information about QR Code technology and this library's design can be found on the project home page.
 

rust/Readme.markdown

@@ -33,6 +33,7 @@ Manual parameters:
 Examples
 --------
 
+```rust
 extern crate qrcodegen;
 use qrcodegen::QrCode;
 use qrcodegen::QrCodeEcc;
@@ -53,5 +54,6 @@ Examples
         (... paint qr1.get_module(x, y) ...)
     }
 }
+```
 
 More complete set of examples: https://github.com/nayuki/QR-Code-generator/blob/master/rust/examples/qrcodegen-demo.rs .