README.md (2): missed an update in previous commit

In previous commit to update instructions relative to removal of bin/

    7670eb3 README.md: replace reference to vogl_build/bin/

, missed updating the path

Signed-off-by: Lawrence L Love <lawrencex.l.love@intel.com>
UI: Update tab order in the Generate Trace dialog
UI: Change user interaction to obtain snapshots from a loaded trace
* Single-click on API call will no longer take a snapshot
* Double-click on API call _will_ take a snapshot
* Pressing [Enter] while an API call is selected _will_ take a snapshot
* There is a now also a semi-transparent overlay that appears on the state viewing area when there is no current snapshot to view. If there is a trace file loaded, the overlay will contain a big button that says "Click here to snapshot state", which does as expected.

The code to handle the overlay widget and transparency is based on code from: http://stackoverflow.com/questions/19383427/blur-effect-over-a-qwidget-in-qt
Better fix for GL_UNSIGNED_INT_8_8_8_8[_REV] ...

The GL_RGBA/GL_UNSIGNED_BYTE combination is associated with
GL_RGBA/GL_UNSIGNED_INT_8_8_8_8_REV, but I had the values reversed between
those two combinations and the GL_RGBA/GL_UNSIGNED_INT_8_8_8_8 combination.  By
reversing these, many other format-type combinations no longer looked correct
(e.g. a GL_RED image had solid red components and varying alpha components).

I have now tested this across a larger set of KTX files, and things seem to be
good.
Merge pull request #87 from lawlove/README-update2

README.md (2): missed an update in previous commit