Added prefix 'mm_'

mm_envir/README

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+mm_envir - program that searchs environment for chosen molecule by geometric criterion
+Version: 1.0.1
+License: GPL
+
+Usage:
+  mm_envir -i FILENAME -c X,Y,Z -o FILEMANE [ -n NUM_OF_MOLECULE ] [ -r RADIUS ] 
+                                                    [ -l LOGFILE ] [ -q ] [ -h ]
+
+Parametrs:
+  -i          - input file with coordinates
+  -c          - cell size (float), A
+  -o          - output file with coordinates
+  -n          - number of molecule for search (integer). Default is 1
+  -r          - radius of environment (float). Default is 6.0
+  -l          - log enable
+  -q          - quiet enable
+  -h          - show this help and exit