Expansion of learning objectives for coordinate reference system lesson

[ann-james]

The learning objectives for the Introduction to Geospatial Concepts, Coordinate Reference System lesson are a bit limited and could be expanded. Likewise, the wording of the first objective (as it is currently written) may be confusing for those with limited GIS experience as the rest of the lesson makes no reference to the word "scheme". A few suggestions for revising the learning objectives for the CRS lesson are as follows:

-Identify and describe a coordinate reference system (CRS)
-Recognize and understand 3 key components of a CRS
-Name at least 1 common system for storing and transmitting CRS information
-Interpret a PROJ4 coordinate reference system description