Add dependency on RecipesBase

[hyrodium]

This PR fixes #180.

using StaticArrays
using BasicBSpline
using Plots

pts = [SVector(0, 0), SVector(1, 1), SVector(2, -1), SVector(3, 0), SVector(4, -2), SVector(5, 1)]
p = 3
k = KnotVector(0:3)+p*KnotVector(0,3)
P = BSplineSpace{p}(k)
M = BSplineManifold(pts, (P,))
plot(M)

[codecov]

Codecov Report

Merging #183 (5bf5c43) into master (7c4d679) will decrease coverage by 0.99%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #183      +/-   ##
==========================================
- Coverage   98.50%   97.50%   -1.00%     
==========================================
  Files          14       15       +1     
  Lines        1073     1084      +11     
==========================================
  Hits         1057     1057              
- Misses         16       27      +11     

Impacted Files	Coverage Δ
src/_PlotRecipes.jl	0.00% <0.00%> (ø)

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