Fixed browser examples. Added SimpleP2Pmonitor example.
Added instructions for runnign the browser examples
Added PayToScriptHashAddress example
Connection: default  value for sendGetBlocks
Peerman: pass event information to listener. Save version on peer.
Fix exec syntax in browser/build.js, fixes error on windows
fixed calcDifficulty by making sure the MAX_TARGET is also locally available.
added tests for 2 difficulty calculations.
PeerManager: Save start_height on peer.
updated the calcDifficulty test to make it clear with what we're testing
Change to @olalonde suggestion for compatibility on both *nix and windows
Connection: Replaced 0000... with util.NULL_HASH
Merge pull request #226 from blocktrail/calcDifficulty-fix

fixed util.calcDifficulty
Merge remote-tracking branch 'olalonde/master'
Merge pull request #224 from olalonde/peer-improvements

Some improvements on PeerManager and Connection classes
Added .travis.yml
Merge pull request #62 from Aaron1011/travis

Added .travis.yml
added travis badge
Merge pull request #232 from maraoz/feature/add-travis-to-readme

Added travis badge
Merge pull request #225 from unusualbob/bug/browserbuildwindows

Fix exec syntax in browser/build.js, fixes error on windows
add testling