Added a beloglazov theme, which is based on the default robbyrussel theme....

Added a beloglazov theme, which is based on the default robbyrussel theme. This theme adds time, the number of non-pushed git commits, and whether the previous command has failed.

themes/beloglazov/README.md

+##  beloglazov
+
+A theme based on the default robbyrussell theme. This theme adds time, the
+number of non-pushed commits, and whether the previous command has failed.
+
+![beloglazov-fish-theme](https://raw.github.com/beloglazov/oh-my-fish/master/themes/beloglazov/beloglazov-fish-theme.png)
+
+
+#### Characteristics
+
+* Displays git information in the command prompt when available
+* Displays the number of non-pushed git commits
+* Displays the current time
+* Displays ✘ if the previous command failed

themes/beloglazov/fish_prompt.fish

+# name: beloglazov
+
+function _git_branch_name
+    echo (command git symbolic-ref HEAD ^/dev/null | sed -e 's|^refs/heads/||')
+end
+
+function _is_git_dirty
+    echo (command git status -s --ignore-submodules=dirty ^/dev/null)
+end
+
+function _git_ahead_count
+    echo (command git log origin/(_git_branch_name)..HEAD ^/dev/null | \
+        grep '^commit' | wc -l | tr -d ' ')
+end
+
+function fish_prompt
+    set -l last_status $status
+
+    set -l cyan (set_color -o cyan)
+    set -l yellow (set_color -o yellow)
+    set -l green (set_color green)
+    set -l red (set_color red)
+    set -l brightred (set_color -o red)
+    set -l blue (set_color -o blue)
+    set -l normal (set_color normal)
+
+    if [ $last_status != 0 ]
+        set failed "$brightred✘$normal "
+    end
+
+    if [ 'root' = (whoami) ]
+        set arrow "$brightred➜$normal  "
+    else
+        set arrow ''
+    end
+
+    set -l time $red(date '+%I:%M')$normal
+    set -l cwd $cyan(basename (prompt_pwd))$normal
+
+    if [ (_git_branch_name) ]
+        set -l git_branch $brightred(_git_branch_name)$normal
+        set git_info "$blue git:($git_branch$blue)$normal"
+        set -l git_ahead_count (_git_ahead_count)
+
+        if [ $git_ahead_count != 0 ]
+            set -l ahead_count "$green+$git_ahead_count$normal"
+            set git_info "$git_info $ahead_count"
+        end
+
+        if [ (_is_git_dirty) ]
+            set -l dirty "$yellow ✗$normal"
+            set git_info "$git_info$dirty"
+        end
+  end
+
+  echo -n -s $failed $arrow $time ' ' $cwd $git_info $normal ' '
+
+end