Added no-sse version to support building for ARM architecture based systems

npm test
```
> scrypt-hash@1.1.8 test ~/scrypt-hash
> node test.js

native: 2102ms
YAY!
```
node bench.js:
```
loop: 185929ms
```

cat /proc/cpuinfo:
```
Processor       : ARMv7 Processor rev 2 (v7l)
BogoMIPS        : 1001.88
Features        : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x3
CPU part        : 0xc08
CPU revision    : 2

Hardware        : sun4i
Revision        : 0000
Serial          : 0000000000000000

```