Update README to add syntax highlighting to each example

Readme.markdown

@@ -43,6 +43,7 @@ Examples
 
 Java language:
 
+```java
 import java.awt.image.BufferedImage;
 import java.io.File;
 import java.util.List;
@@ -62,9 +63,11 @@ Java language:
         (... paint qr1.getModule(x, y) ...)
     }
 }
+```
 
 TypeScript/JavaScript languages:
 
+```javascript
 // Name abbreviated for the sake of these examples here
 var QRC = qrcodegen.QrCode;
 
@@ -80,9 +83,11 @@ TypeScript/JavaScript languages:
         (... paint qr1.getModule(x, y) ...)
     }
 }
+```
 
 Python language:
 
+```python
 from qrcodegen import *
 
 # Simple operation
@@ -95,9 +100,11 @@ 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"
@@ -117,9 +124,11 @@ C++ language:
         (... paint qr1.getModule(x, y) ...)
     }
 }
+```
 
 C language:
 
+```c
 #include <stdbool.h>
 #include <stdint.h>
 #include "qrcodegen.h"
@@ -147,9 +156,11 @@ 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;
@@ -170,6 +181,7 @@ Rust language:
         (... paint qr.get_module(x, y) ...)
     }
 }
+```
 
 
 License