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README.md

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+# Password generator
+* can generate multiple passwords at once (separated by \n)
+* can use Cyrillic/Japanese/Chinese character sets
+* uses at least one character from each character set
+
+## Build
+
+```sh
+go build .
+```
+
+## Usage
+
+```sh
+Usage of ./passgen:
+  -L int             length of the generated password (default 16)
+  -S                 use spaces
+  -all               use all character sets
+  -c int             how many passwords to generate (default 1)
+  -l                 use lowercase ascii characters
+  -U                 use uppercase ascii characters
+  -n                 use numbers
+  -s                 use special characters
+  -unicode-cyrillic  use unicode Cyrillic characters
+  -unicode-chinese   use unicode Chinese characters
+  -unicode-japanese  use unicode Japanese characters
+```