[readme] Add specific section for ubuntu dependencies

Note: This was tested successfully on Ubuntu Saucy.
Merge pull request #21 from mh001/master

Test Report for Coin Control
Merge some Bitcoin code as preliminary step to support coin control features.

New data structures:
-CPubKey
-CKeyID
-CScriptID
-CTxDestination
Add coin control features (experimental, don't use that with real coins yet !).
Fix transaction list bug.
Fix bug causing the custom change address to be ignored in coin control.
add createmultisig RPC

add createmultisig RPC call
Add signed message verification feature.
Update french locale.

Add translation for new menu entry (unlock wallet for minting).
Fix typos.
Add french translation to coin control features.
Add french translation to signed message verification feature.
Fix createmultisig RPC.
Update bitcoin_nb.ts

Norwegian Bokmål translation
Merge pull request #19 from glv2/peerunity-rc

Coin control + createmultisig + french translations
Merge pull request #17 from jmcfarlane/ubuntu-docs

[readme] Add specific section for ubuntu dependencies
Merge pull request #25 from sandakersmann/master

Update bitcoin_nb.ts
Merge pull request #28 from mh001/master

POS output and coin locking
updated GUI strings.
branded about dialog box
updated build targets to peerunity-qt and peerunityd