--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test-data/illu_file_2_index.txt	Wed Nov 25 12:37:28 2015 -0500
@@ -0,0 +1,100 @@
+@D3FCO8P1:229:C49NHACXX:8:1101:1347:2097 3:N:0:
+NNNNCNNN
++
+########
+@D3FCO8P1:229:C49NHACXX:8:1101:1406:2140 3:N:0:
+CTCTCTAT
++
+CCCFFFFF
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+CTCTCTAT
++
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+TAGATCGC
++
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+CTCTCTAT
++
+@C@FFFFF
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+TAGATCGC
++
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+@D3FCO8P1:229:C49NHACXX:8:1101:1486:2204 3:N:0:
+CTCTCTAT
++
+CCCFFFFF
+@D3FCO8P1:229:C49NHACXX:8:1101:1460:2207 3:N:0:
+CTCTCTAT
++
+BCCFDFEF
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+TAGATCGC
++
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+CTCTCTAT
++
+CCCFFFDF
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+CTCTCTAT
++
+?@@DDDDF
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+TAGATCGC
++
+C@CFFFFF
+@D3FCO8P1:229:C49NHACXX:8:1101:1399:2245 3:N:0:
+TAGATCGC
++
+@@@DFD=B
+@D3FCO8P1:229:C49NHACXX:8:1101:1664:2088 3:N:0:
+NNNNCNNN
++
+########
+@D3FCO8P1:229:C49NHACXX:8:1101:1512:2095 3:N:0:
+NNNNCNNN
++
+########
+@D3FCO8P1:229:C49NHACXX:8:1101:1630:2114 3:N:0:
+NNCTCTNN
++
+########
+@D3FCO8P1:229:C49NHACXX:8:1101:1540:2119 3:N:0:
+NNCTCTNT
++
+########
+@D3FCO8P1:229:C49NHACXX:8:1101:1503:2124 3:N:0:
+NNCTCTAT
++
+##0<@@?@
+@D3FCO8P1:229:C49NHACXX:8:1101:1671:2150 3:N:0:
+TAGATCGC
++
+CCCFFFFF
+@D3FCO8P1:229:C49NHACXX:8:1101:1552:2151 3:N:0:
+CTCTCTAT
++
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+@D3FCO8P1:229:C49NHACXX:8:1101:1700:2159 3:N:0:
+TAGATCGC
++
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+@D3FCO8P1:229:C49NHACXX:8:1101:1652:2170 3:N:0:
+TAGATCGC
++
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+@D3FCO8P1:229:C49NHACXX:8:1101:1537:2174 3:N:0:
+CTCTCTAT
++
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+@D3FCO8P1:229:C49NHACXX:8:1101:1563:2176 3:N:0:
+TAGATCGC
++
+CCCFFFFF
+@D3FCO8P1:229:C49NHACXX:8:1101:1587:2187 3:N:0:
+CTCTCTAT
++
+CCCFFFFF