IE11 support

[sedhalsoni]

I have stick the first two columns using React-sticky-table , they are working in chrome but i have checked in E11 it's not working.

Thanks

[maxhudson]

will update readme for now to convey not supported

https://caniuse.com/#feat=css-sticky

only semi-straightforward solution I can think of is poll for sticky cell sizes, add padding where those sticky cells would be to the table, and make the sticky cells position absolute.

There's probably a better solution I can't think of, but this one is too heavy-weight to be worth it for ie 11 support in my opinion. Open to other opinions... It'd probably add 50 LOC to the package (25%+ addition), and cause performance degradation on non-ie browsers (regression)/a lot more room for bugs.

[maxhudson]

Apparently readme already clarifies ie11 is not currently supported