v0.2.8

• Updates in the description.
• README.md: More links to examples and link to repo, as package source maybe be propagated.
• NEWS file up-to-date.
• Travis file is removed.
• Minor improvements on Vignette isingLenzMC.Rnw.

• Dataset links are provided.
• Minor improvement on README

• Improved example power law for Ising Model ergodicity. Notebooks are added with README.
• R Check correction on URLs