add community profiling assay and protocol

assays/Culture-independentCommunityProfiling/protocols/Culture-independentCommunityProfilingProtocol.md

+## Culture-independent community profiling
+
+Bacterial communities were profiled by amplicon sequencing of the variable v5-v7 regions of the bacterial 16S rRNA gene. Library preparation for Illumina MiSeq sequencing was performed as described previously (Duran, P. et al., 2018). In all experiments, multiplexing of samples was performed by double-indexing (barcoded forward and reverse oligonucleotides for 16S rRNA gene amplification).
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