Changed packaging.

- Drop .yapfaqrc and yapfaq.cfg in favor of .yapfaqrc.sample
  and yapfaq.cfg.sample; rename test.txt to sample.txt.
- Change contents of these files to reflect the new names.
- Update some defaults, change sample.txt contents to English.
- Add "INSTALLATION" chapter to documentation.

Fixes #7.

Signed-off-by: Thomas Hochstein <thh@inter.net>

yapfaq.cfg.sample

@@ -0,0 +1,48 @@
+# name of your project
+Name = 'sample'
+
+# file to post (complete body and pseudo-headers)
+# ($File.cfg contains data on last posting and last MID)
+File = 'sample.txt'
+
+# how often your project should be posted
+# use (d)ay OR (w)eek OR (m)onth OR (y)ear
+Posting-frequency = '1d'
+
+# time period after which the posting should expire
+# use (d)ay OR (w)eek OR (m)onth OR (y)ear
+# This setting is optional. Default: 3m
+# Expires = '3m'
+
+# header "From:"
+From = 'John Doe <john-doe@example.com>'
+
+# header "Subject:"
+# (may contain "%LM" which will be replaced by the contents of the
+#  Last-Modified pseudo header).
+Subject = 'test noreply ignore'
+
+# comma-separated list of newsgroup(s) to post to
+# (header "Newsgroups:")
+NGs = 'de.test'
+
+# header "Followup-To:"
+# This setting is optional. Default: unset
+# Fup2 = 'poster'
+
+# Message-ID ("%n" is $Name)
+# This setting is optional. Default: <%n-%y-%m-%d@YOURHOST>
+# MID-Format = '<%n-%y-%m-%d@domain.invalid>'
+
+# Supersede last posting?
+# This setting is optional. Default: unset
+Supersede = yes
+
+# extra headers (appended verbatim)
+# use this for custom headers like "Approved:"
+# This setting is optional. Default: unset
+ExtraHeader = 'Approved: moderator@domain.invalid
+X-Header: Some text'
+
+# other projects may follow separated with "====="
+# =====