Added check git exist on exec some cli commands.

Fixed errors on exec some cli commands if git does not exist.
For example:

$ perl -I../lib minil new Test
Can't exec "git": No such file or directory at ../lib/Minilla/CLI/New.pm line 27.
Use of uninitialized value $username in substitution (s///) at ../lib/Minilla/CLI/New.pm line 28.
Can't exec "git": No such file or directory at ../lib/Minilla/CLI/New.pm line 30.
Use of uninitialized value $email in substitution (s///) at ../lib/Minilla/CLI/New.pm line 31

Added:
If git does not exist - displayed message 'The "git" executable has not been found.' and script terminates.
Merge pull request #78 from gashev/check_git

Added check git exist on exec some cli commands.
Add a minil run command
Merge pull request #79 from lestrrat/master

Add a minil run command
Added version number validation while release process.
Checking in changes prior to tagging of version v0.6.0.

Changelog diff is:

diff --git a/Changes b/Changes
index 33e7fee..030cf34 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,15 @@ Revision history for Perl extension Minilla

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+v0.6.0 2013-08-14T05:49:51Z
+
+    - Added version number validation while release process.
+      (tokuhirom)
+    - Add a minil run command
+      (lestrrat)
+    - Added check git exist on exec some cli commands.
+      (gashev)
+
 v0.5.6 2013-07-07T02:36:17Z

     - Show error message when Minilla can't get version number.
Use Text::MicroTemplate for more readable code.
Support PL_files.
Checking in changes prior to tagging of version v0.6.1.

Changelog diff is:

diff --git a/Changes b/Changes
index 030cf34..161bcb9 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,11 @@ Revision history for Perl extension Minilla

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+v0.6.1 2013-08-15T06:14:53Z
+
+    - Support PL_files
+      (tokuhirom)
+
 v0.6.0 2013-08-14T05:49:51Z

     - Added version number validation while release process.
Generate stopword list by Dumper.
Since "Fuji, Goro" contains comma character. It makes warinngs in qw().
oops. i forgot to fix the test for previous commit
Checking in changes prior to tagging of version v0.6.2.

Changelog diff is:

diff --git a/Changes b/Changes
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--- a/Changes
+++ b/Changes
@@ -2,6 +2,11 @@ Revision history for Perl extension Minilla

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+v0.6.2 2013-08-16T00:48:07Z
+
+    - Generate stop words list by Dumper.
+      (reported by gfx++)
+
 v0.6.1 2013-08-15T06:14:53Z

     - Support PL_files
Do not use version::is_strict. version::is_strict rejects '5.00_01' style.
Checking in changes prior to tagging of version v0.6.3.

Changelog diff is:

diff --git a/Changes b/Changes
index 873b3b4..4b22a11 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,10 @@ Revision history for Perl extension Minilla

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+v0.6.3 2013-08-20T04:27:22Z
+
+    - version::is_strict is too strict for me. Use version::is_lax instead.
+
 v0.6.2 2013-08-16T00:48:07Z

     - Generate stop words list by Dumper.
Support x_authoirty.
Checking in changes prior to tagging of version v0.6.4.

Changelog diff is:

diff --git a/Changes b/Changes
index 4b22a11..86eec11 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,11 @@ Revision history for Perl extension Minilla

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+v0.6.4 2013-08-21T08:06:10Z
+
+    - Addex x_authority support
+      (tokuhirom)
+
 v0.6.3 2013-08-20T04:27:22Z

     - version::is_strict is too strict for me. Use version::is_lax instead.
fixed deps
Checking in changes prior to tagging of version v0.6.5.

Changelog diff is:

diff --git a/Changes b/Changes
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--- a/Changes
+++ b/Changes
@@ -2,6 +2,10 @@ Revision history for Perl extension Minilla

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+v0.6.5 2013-09-01T23:35:54Z
+
+    - Fixed deps
+
 v0.6.4 2013-08-21T08:06:10Z

     - Addex x_authority support
skip -x test that has a portability issue on win32 (see perlport; chmod has an issue as well)
Merge pull request #81 from charsbar/skip_x_test

skip -x test that has a portability issue on win32