I think you need a new line before the `*`

Example:

```
### Bugs & Testing
Please feel free to add [issues](https://github.com/financeCoding/dart-bignum/issues) on github issue tracker, we would like to provide a solid library for the community to use. 

### References

* [BigInteger C#](http://biginteger.codeplex.com/)
* [BigInteger Java](http://developer.classpath.org/doc/java/math/BigInteger-source.html)
* [LibTomMath](http://libtom.org/?page=features&newsitems=5&whatfile=ltm)
* [javascript-bignum](https://github.com/jtobey/javascript-bignum)
* [BigInt.js](http://www.leemon.com/crypto/BigInt.js)
* [MAPM](http://www.tc.umn.edu/~ringx004/mapm-main.html)
* [crypto.js](http://code.google.com/p/v8/source/browse/branches/bleeding_edge/benchmarks/crypto.js)
```

https://raw.github.com/dartist/dart-bignum/master/README.md

http://pub.dartlang.org/packages/bignum