Check all the iruby examples and a minor change in a CSS example in HighCharts

[Prakriti-nith]

Run-all all the IRuby examples to ensure that nothing is breaking.

[coveralls]

Pull Request Test Coverage Report for Build 679

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 98.044%

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Totals
Change from base Build 677:	0.0%
Covered Lines:	3208
Relevant Lines:	3272

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💛 - Coveralls

[Shekharrajak]

Note : Has to finish before new release : #123

[Prakriti-nith]

I just did a minor change in the CSS examples in this PR and re-run all the examples again. I think this is complete.

[Shekharrajak]

I just did a minor change in the CSS examples in this PR

I didn't see new commit @Prakriti-nith . Are that changes just for you?

[Prakriti-nith]

@Shekharrajak I did the change in the original commit of the PR. While moving the CSS, modules and chart_class options to the third parameter, I forgot to do the same in one of the examples of CSS, I have corrected that in this PR.

[Shekharrajak]

Thanks @Prakriti-nith , for update. After #119 we will merge this.

[Shekharrajak]

@Prakriti-nith , is it good to merge ?

[Prakriti-nith]

@Shekharrajak Yes, it can be merged.