[GSOC2018][RubyPlot-GR] [30-07-2018] further progress on subplots

[Pranav Garg]

Greetings everyone!

An update on subplots.After a lot of bugs and rendering the framework useless several times, I have worked the subplots into the main framework(yay?).I wanted to push the perfectly working Subplots but  there is a bug in locating them, the plots aren't shown at a correct place. I need to further work on the logic  of locating subplots in the figure. Since I had to rework the core of the Framework I have created a separate branch.

https://github.com/pgtgrly/GRruby-extension/commit/38656622e95d0de93ab4be894ece20663f2952af

Once I get the localisation sorted out I will make them prettier.

Regards PG