Update to .gitignore to ignore IDEA files.
Update to .gitignore to ignore IDEA files.

ahsannabi/semanticvectors,dwiddows/semanticvectors,Peratham/semanticvectors-1,codeaudit/semanticvectors,ahsannabi/semanticvectors,alifars/semanticvectors,alifars/semanticvectors,alifars/semanticvectors,codeaudit/semanticvectors,rvedam/semanticvectors,dwiddows/semanticvectors,Peratham/semanticvectors-1,semanticvectors/semanticvectors,alifars/semanticvectors,ahsannabi/semanticvectors,Peratham/semanticvectors-1,semanticvectors/semanticvectors,ahsannabi/semanticvectors,semanticvectors/semanticvectors,Peratham/semanticvectors-1,rvedam/semanticvectors,codeaudit/semanticvectors,semanticvectors/semanticvectors,codeaudit/semanticvectors,dwiddows/semanticvectors,rvedam/semanticvectors,rvedam/semanticvectors,dwiddows/semanticvectors