Removed unused function
Fixed smileypack's path
Update toxcore API name.
Fix typo.
Update submodule.
Update project file.
Fix in response to API changes.
Update submodule.
More API update.
Merge pull request #86 from aitjcize/api-name

Update toxcore API name.
Updated Travis to use Qt 5.2.0
Use system's default config file location for storing settings
Replaced native separators with nix separators when interacting with Qt

QDir::separator(), aka system native separator, should be used only when
displaying paths to a user. Qt internally expects '/' as a separator. More in
QDir::separator() doc.
Updated build instructions and build process to use Qt 5.2.0
Updated general information and build instructions