first draft of fitness module, with just body-type-measurement for now.
added tests and made some updates to fitness module, reset version to indicate early stages" .
updated descriptions, defaults, and reset version number to indicate early stages
named body-measurement
added major and minor properties to the height and weight measurements, updated tests
simplified schema to assume everything in cm and grams, updated tests
using scope for bodyMeasurement functions as a sub-property of the export
switch to camelCase and use createdAt and updatedAt (switch add() to create() for consistency)
added update method with tests.
Merge pull request #67 from remotestorage/module/fitness

first draft of fitness module, with just body-type-measurement for now.