Fix issue #131 to we use adapter.getItemText() rather than item.toString

[scottyab]

• Fix issue Selected Item shows with .toString() #131 to we use adapter.getItemText() rather than item.toString.
• ⚠️ had to remove the Hint text handling as I observed several bugs related to manipulating the size of the adapter, i.e +1 with hint present. For example the spinner would be missing the first item and then would crashing with index out of bounds error on selection of items at end of the list. (Just see how the example app doesn't show Cupcake). This might be somewhat drastic to remove however I was short on time and it's not a feature we use so I removed to simplify.
• Update Gradle so project runs