added a small test dataset

test/3c196.sky.txt

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+## this is an LSM text (hms/dms) file
+##  fields are (where h:m:s is RA, d:m:s is Dec):
+##  name h m s d m s I Q U V spectral_index0 spectral_index1 spectral_index2 RM extent_X(rad) extent_Y(rad) pos_angle(rad) freq0
+
+P3C196C1 8 13 35.981540 48 12 59.174770 32.214646 0 0 0 -0.4356 0.0926 0 0 0 0 0.0 143000000.0
+P3C196C2 8 13 35.817620 48 13 01.598800 11.878165 0 0 0 -1.0042 0.7354 0 0 0 0 0.0 143000000.0
+P3C196C3 8 13 36.232730 48 13 03.849360 16.174678 0 0 0 -0.5346 -0.4209 0 0 0 0 0.0 143000000.0
+P3C196C4 8 13 36.441790 48 13 01.879160 19.410151 0 0 0 -0.7803 0.7238 0 0 0 0 0.0 143000000.0
+
+P2C1 8 14 30.34 45 56 38.70 5.095452 0 0 0 0 0 0 0 0 0 0.0 143000000.0
+P3C1 8 21 33.65 47 02 28.50 3.000000 0 0 0 0 0 0 0 0 0 0.0 143000000.0
+P3C2 8 21 33.79 47 02 40.50 2.600000 0 0 0 0 0 0 0 0 0 0.0 143000000.0
+P3C3 8 21 34.67 47 02 42.00 1.000000 0 0 0 0 0 0 0 0 0 0.0 143000000.0
+P12C1 8 01 35.90 50 09 47.00 2.200000 0 0 0 0 0 0 0 0 0 0.0 143000000.0
+P12C2 8 01 35.12 50 09 38.50 3.500000 0 0 0 0 0 0 0 0 0 0.0 143000000.0

test/3c196.sky.txt.cluster

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+-1 2 P3C196C1 P3C196C2 P3C196C3 P3C196C4
+2 1 P2C1
+#3 2 P3C1 P3C2 P3C3
+#4 1 P12C1 P12C2

test/dosage.sh

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+# Before running this, untar sm.ms.tar and build sagecal
+../src/MS/sagecal -d sm.ms -s 3c196.sky.txt -c 3c196.sky.txt.cluster -n 4 -t 10 -p sm.ms.solutions -e 4 -g 2 -l 10 -m 7 -x 30 -F 1 -j 5  -k -1 -B 1 -W 0 > sm.ms.output