XY Graph option for line graph
Minor change
Initial Version of Scatter Chart
Added Vertical Lines for Grid
Add test cases to Scatter Chart
Fix to the x-axis line numbering
Oops! Left a puts statement in Scatter Draw Method
Additional Test Cases
Documentation Updates
Contributed bezier graph. Needs tests.
Removing theme methods from Gruff::Base and storing existing theme configs as constants in Gruff::Themes.
Branch allows the staggering and truncation of labels for bar charts.
seems silly to not let the labels get drawn for columns that don't have data points.  the x labels would still be valid i would think in most situations.  only fixed for line graphs

Signed-off-by: Geoffrey Grosenbach <boss@topfunky.com>
Added the option to change the spacing between bar charts.

Signed-off-by: Geoffrey Grosenbach <boss@topfunky.com>
fix issue with the display of side bar stacked graphs

Signed-off-by: Geoffrey Grosenbach <boss@topfunky.com>
even if the data is 0 we still need to draw the labels

Signed-off-by: Geoffrey Grosenbach <boss@topfunky.com>
changed the y-axis label to read from bottom to top, as opposed to top to bottom

Signed-off-by: Geoffrey Grosenbach <boss@topfunky.com>
Make sure the Gruff::Layer::filenames array is sorted when creating.

If the array is not sorted, the rest of the class fails to work as intended
and the tests fail:

  2) Failure:
test_layer(TestGruffScene) [./test/test_scene.rb:54]:
<["cloudy.png", "partly_cloudy.png", "stormy.png"]> expected but was
<["stormy.png", "partly_cloudy.png", "cloudy.png"]>.

and

  2) Failure:
test_layer(TestGruffScene) [./test/test_scene.rb:61]:
<"1200.png"> expected but was
<"0600.png">.

Signed-off-by: Geoffrey Grosenbach <boss@topfunky.com>
Remove a call to set label_max_decimals on Gruff::Line that doesn't exist.

Signed-off-by: Geoffrey Grosenbach <boss@topfunky.com>
Resolve conflicts, merge with master.