Fix grammar/spelling error

Change "manual" -> "manually" for better grammar. Not necessary, but Arch is about "correctness over convenience" isn't it? :smirk:
add proxy configuration
Merge pull request #200 from nivensd/patch-1

Fix grammar/spelling error
Merge pull request #203 from wzrdtales/master

add proxy configuration
added rankmirror, ensure that users type a correct password when configuring postgres
minor tweaks in proxy configuration
minor tweaks in proxy configuration
minor tweaks in proxy configuration
fixed arista install
avoid error msg when checking file in add_line function
avoid error msg when checking file in add_line function