Update sticky.md

Added some content to the overview, tried to clarify the personal wallet being where you store your private key, and noting that wallets should be encrypted when possible. Also re-ordered the desktop wallet links, they were in alphabetic order, and probably (for newbies) should be in order of ease of installation/use.
Assuming this is for newbies, simplicity. Electrum has some interesting privacy and security features, but it also makes setup a bit more complicated for someone who is still trying to figure out "what is bitcoin?". Also, if they ever shut down, then I think the user would be faced with the difficulty of migrating their private keys or transferring their funds. Multibit is the simplest, and is 100% independent of any one service provider. 

My 2 cents, I think you could go either way but it's really security versus simplicity of first time use. 

> On Jun 28, 2014, at 12:51 PM, BashCo <notifications@github.com> wrote:
> 
> In sticky.md:
> 
> >  * [Multibit](https://multibit.org/)
> > +* [Electrum](https://electrum.org/)
> > +* [Amory](https://bitcoinarmory.com/)
> >  
> Any reason for reordering these? My preference would be 'Electrum, Multibit, Armory'. Also, just noticed that 'Amory' is misspelled.
> 
> —
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