Add checks for keywords to fix #166

[ScottPJones]

No description provided.

[codecov-io]

Codecov Report

Merging #2 into master will increase coverage by 0.58%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master       #2      +/-   ##
==========================================
+ Coverage   77.33%   77.92%   +0.58%     
==========================================
  Files           2        3       +1     
  Lines          75       77       +2     
==========================================
+ Hits           58       60       +2     
  Misses         17       17

Impacted Files	Coverage Δ
src/ODEInterfaceDiffEq.jl	100% <100%> (ø)
src/solve.jl	75.36% <62.5%> (+0.36%)	⬆️

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[coveralls]

Coverage increased (+0.6%) to 77.922% when pulling 86ceec1 on ScottPJones:spj/fix166 into 9e163be on JuliaDiffEq:master.

[coveralls]

Coverage increased (+0.6%) to 77.922% when pulling 86ceec1 on ScottPJones:spj/fix166 into 9e163be on JuliaDiffEq:master.