Added the word search description to lab 6
Skeleton change: read from stdin as per lab doc.

NB POSSIBLE AUTOGRADER BREAK

Lab doc told students to use
    ./a.out < testfile.txt
to run their code; however the program actually took in a filename on
stdin.

Modified the code to read its input from stdin. Other option was to
update the lab document, but this is easier & more amenable to
autograding- that said, the autograder is probably not yet set up to use
this input format.
Formatting of lab05 doc
Updated the input specification for in-lab 5 to properly reflect the source code, as per ceckman's comments
Updates to the slides, primarily the 07-hashes.html slide set
Finished lab 6, but the tutorial (which is part of lab 6 in-lab) still needs work
Updates for tomorrow's lecture, including the daily announcements
Fixed a few things in the slides so that they will verify correctly
Updates from today's lectures
Added the shell scripting tutorial, and updated lab 6 to reflect this
Added the 08-ibcm.html slide set, but it still needs lots of editing
Added a first take at lab 7
Updated the daily announcements for tomorrow's lecture
Updates from today's lectures
Revert "Skeleton change: read from stdin as per lab doc."

This reverts commit 5f3fc716d873b0d98ee659b7bb90f904b1c4478b.
Merge branch 'master' of https://github.com/aaronbloomfield/pdr
Finished the IBCM lecture
Updated daily-announcements for tomorrow's lecture
Fixed the clang++ flags, as per github issue #17
Updated the daily announcements for tomorrow