Adapted GameItem and DotA2Item parsing to DotA2 API changes
Added debug output to Web API calls
Updated license year
Version bump to 1.3.4
Spelling corrections
Changing API to HTTPS.
Make HTTPS optional for Web API

Use WebApi::setSecure() to enable or disable HTTPS. Default is enabled.
Add link to Google+ page to README
Add contribution guidelines
Fix website URL in README
Fix constructor of SocketException

This prevents an error when used without sockets extension.
Slightly improve contribution guidelines
Version bump to 1.3.5
Use the correct port for GoldSrc master servers

See koraktor/steam-condenser#218
Fixed Web API calls without key

See koraktor/steam-condenser#219
Implemented WebApi::getInterfaces()
Add test for Web API without key
Do only catch TimeoutExceptions in MasterServer::getServers()

This prevents errors from being silently discarded.
Fix visibility of GameInventory::getAppId()
Fix some comments