Merge pull request #2 from ccharles/master

Additional comments and a few corrections
Add "Dealing With Errors" Section

Include a section on dealing with errors, to be expanded on at a later time.
Revise PHP.net Section

Modify the PHP.net section to change the wording of the tip regarding user-contributed code.  Use of other code is not to be discouraged, simply cautioned.
Include student handout

Include the first draft of the student handout as part of the course
material.
Extract text, image from DOCX with LibreOffice
Quick pass at creating Markdown from text
Replace "smart" apostrophes with straight ones
Add code snippets from DOCX file
Convert "pipe tables" to "simple tables"

Pipe tables don't work with pipe characters in cells, e.g. for the `||`
operator.
Wrap newline in code markers

Now pandoc is able to build a PDF from the Markdown source.
Wrap variables in code markers
Add links to PHP.net, Creative Commons
Remove trailing whitespace that broke a list
Adjust header levels
Add code markers to loop keywords
Move Hackademy logo to "before body" section

This affects both the new handout and the existing instructor document.
Add Andrew's Twitter handle, remove date
Replace "scalar" with "dynamically typed"
Remove DOCX source file and TXT temporary file

The Markdown file should now be sufficient.
Merge branch 'markdown-handout'