Update directory structure in first-program  and update status in README
added "independent" before use of word "discrete"
adjust italicized text
clarification of function naming conventions
removed spaces around em dash
switched a period to a colon
rephrasing
switched "ones" to "functions"
switched "if" to "whether"
switched "for use with" to "used exclusively with"
rephrased usage of comparison functions
sentence reorganization
period -> colon
added code formatting
added "However"
switched an "and" to an "as well as"
Started Module 4
Merge pull request #61 from kariannemah/dir_structure

Update directory structure in first-program and update status in README
Updated Windows setup JDK images to JDK8
Change height exercise to centimeters instead of meters.