Fix inconsistency in doc

[pizhn]

[pizhn]

Just renamed LS1 to LocalSearch and fixed some docs, will that be confusing because it sounds just like a local optimization method but its actually global.

[codecov-commenter]

Codecov Report

Merging #114 (83fa612) into master (07e70ad) will not change coverage. The diff coverage is 88.88%.

@@           Coverage Diff           @@
##           master     #114   +/-   ##
=======================================
  Coverage   70.69%   70.69%           
=======================================
  Files          37       37           
  Lines        2962     2962           
=======================================
  Hits         2094     2094           
  Misses        868      868           

Impacted Files	Coverage Δ
src/Nonconvex.jl	100.00% <ø> (ø)
src/algorithms/mts.jl	95.68% <88.88%> (ø)

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[mohdibntarek]

Please move the renaming to NonconvexSearch then update the docs here.