Add union bedgraph example to project templates.

Author: jmchilton

project_templates/union_bedgraph/bedgraph_examples.sh

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+#!/bin/bash
+wget https://raw.githubusercontent.com/galaxyproject/tools-iuc/master/tools/bedtools/test-data/unionBedGraphs1.bg -o unionBedGraphs1.bedgraph
+wget https://raw.githubusercontent.com/galaxyproject/tools-iuc/master/tools/bedtools/test-data/unionBedGraphs2.bg -o unionBedGraphs2.bedgraph
+wget https://raw.githubusercontent.com/galaxyproject/tools-iuc/master/tools/bedtools/test-data/unionBedGraphs3.bg -o unionBedGraphs3.bedgraph
+unionBedGraphs -i unionBedGraphs1.bedgraph -i unionBedGraphs2.bedgraph -i unionBedGraphs3.bedgraph > output.bedgraph
+
+# planemo tool_init --force --id union_bedgraphs --requirement bedtools --name 'Union Bedgraphs' --example_command 'unionBedGraphs -i unionBedGraphs1.bg -i unionBedGraphs2.bg -i unionBedGraphs3.bg > output.bedgraph' --example_input 'unionBedGraphs1.bg' --example_input 'unionBedGraphs2.bg' --example_input 'unionBedGraphs3.bg' --example_output 'output.bedgraph' --test_case --doi '10.1093/bioinformatics/btq033' --help_text 'Union BedGraphs'
+
+# planemo t union_bedgraphs.xml ## Fails
+
+# planemo t --conda_dependency_resolution  --conda_auto_install --conda_auto_init union_bedgraphs.xml ## works...

project_templates/union_bedgraph/output.bedgraph

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+chr1	1000	1500	10	0	0
+chr1	1980	2000	0	0	80
+chr1	2000	2070	20	0	80
+chr1	2070	2090	20	0	0
+chr1	2090	2100	20	0	20

project_templates/union_bedgraph/unionBedGraphs1.bedgraph

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+chr1	1000	1500	10
+chr1	2000	2100	20

project_templates/union_bedgraph/unionBedGraphs2.bedgraph

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+chr1	900 1600	60
+chr1	1700	2050	50

project_templates/union_bedgraph/unionBedGraphs3.bedgraph

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+chr1	1980	2070	80
+chr1	2090	2100	20