Updating bulletin section.

1) added Van Den Broeke to list of Assistant Professors (should be done for GEOL major, as well)

2) Rewrote program description for readability.

3) Added newly approved courses (METR 421, METR 433, METR 471) to list for Minor with Meteorology emphasis.

4) Added METR 205 to required courses for minor with Climatology emphasis and reduced number of courses from list to 3 to maintain overall number of courses.  METR 205 is a prerequisite for METR 475 (truth in advertising)