Update ncbi egapx (#39)

* minor updates, upgrade to 0.3.0-alpha
* adding default taxid=0

tools/ncbi_egapx/ncbi_egapx.xml

@@ -81,7 +81,7 @@ $row
                         <param name="uri" type="text" label="URI pointing to the reference genome FASTA file"/>
                     </when>
                 </conditional>
-                <param name="taxid" type="integer" min="0" label="NCBI Taxon ID" help="Used to identify the HMM model files needed"/>
+                <param name="taxid" type="integer" min="0" value="0" label="NCBI Taxon ID" help="Used to identify the HMM model files needed"/>
                 <conditional name="condrnaseq">
                     <param name="rna_type_select" type="select" label="RNA sequence data source"
                         help="Select RNAseq input data from history or input a list of SRA identifiers or remote URI">