Resolve "get unmapped reads"

Closes #32 (closed)

tools/bedtools/bamtofastq_pairs/example_usage/Snakefile

+configfile: "config.yaml"
+
+# ==== Snakefile path ====
+__bedtools_bamtofastq_pairs_rules = config.get("snakefiles", {}).get("bedtools_bamtofastq_pairs")
+
+__main_output_dir = config.get('output_dir', 'output')
+
+# ==== Main config ====
+SAMPLES = config.get('samples')
+__input_dir = config.get('input_dir', 'data')
+
+# ==== Bedtools bamtofastq ====
+__bedtools_bamtofastq_pairs_output_dir = f"{__main_output_dir}/bedtools_bamtofastq_pairs"
+__bedtools_bamtofastq_pairs_input = "{dir}/{{sample}}.bam".format(dir=__input_dir, sample="{sample}")
+__bedtools_bamtofastq_pairs_output_forward_name = "{dir}/{{sample}}_1".format(
+    dir=__bedtools_bamtofastq_pairs_output_dir, sample="{sample}"
+)
+__bedtools_bamtofastq_pairs_output_reverse_name = "{dir}/{{sample}}_2".format(
+    dir=__bedtools_bamtofastq_pairs_output_dir, sample="{sample}"
+)
+include: __bedtools_bamtofastq_pairs_rules
+
+rule all:
+    input:
+        forward = expand(f"{__bedtools_bamtofastq_pairs_output_forward_name}.fq.gz", sample=SAMPLES),
+        reverse = expand(f"{__bedtools_bamtofastq_pairs_output_reverse_name}.fq.gz", sample=SAMPLES)