Added some c snippets and snippet switching.
Note snippets changes; tweak fswitch logic slightly.
Use 79-character comment banners.
Add EasyMotion plugin.
Correct a typo.
Note keystrokes for incsearch plugin.
Remove obsolete mappings for Command-T migration.
Use automatic period for certain snippets.
Enable UltiSnips by default only when Python is built into Vim.
Use start-of-line mappings for EasyMotion <Space>j and <Space>k.
Remove obsolete VisualSearch function.
Rename NormalRegrep to NormalRegrepCword to match upcoming convention.
Add the "Ack" plugin for searching using the "ack" utility.
Add Ag plugin for use with the 'ag' search utility.
Reorder installation notes slightly.
Add '#' and :G to search using :Ag/:Ack.