Added widgetFontSize, widgetPosition and widgetAlign to ofxUICanvas and ofxWidgetPosition to ofxUI
Condensed code from addWidgetDown, addWidgetUp, addWidgetLeft and addWidgetRight on addWidgetPosition
Added addSpacer to ofxUICanvas, condensed the ofxUISpacer constructors and updated all sample projects.
Removed empty constructor from ofxUISpacer
Merge pull request #39 from camilosw/CompactSyntax2

Added addSpacer method to ofxUICanvas
fixed ofxUICustomization example crashing
added Compact Syntax Example
Added addSlider and addFPSSlider to ofxUICanvas, condensed the ofxUISlider and ofxUIFPSSlider constructor, reduced the parameters of ofxUIFPSSlider, updated all sample projects and removed unused code from two sample projects.
Merge branch 'develop' into CompactSyntax2
added clearSelected() feature to ofxUIDropDownList
fixed ofxUIMultiImageButton and Toggle from crashing upon creation and updated them for variable binding
Merge pull request #43 from obviousjim/develop

added clearSelected() feature to ofxUIDropDownList
Restored previous constructors on ofxUISlider to maintain backward compatibility and added a warning on them.
cleaned up develop branch to prepare for CompactSyntax Branch
fixed ofxUIImageSlider to work with variable binding
fixed example-ofxUIMoreWidgets to compile and work properly
fixed ofxUINumberDialer to be more precise and give more feedback to the user
Added addRangeSlider, addRadio, addButton, addToggle, add2DPad and addTextInput to ofxUICanvas. Restored previous constructors to ofxUIFPSSlider. Updated example-ofxUIAllWidgets.
added OFX_UI_NO_XML define if xml isn't needed
Merge pull request #49 from danomatika/master

added OFX_UI_NO_XML